main admin and front-end scripts

12 files changed, 2261 insertions, 57 deletions

diff --git a/html/assets/css/admin.css b/html/assets/css/admin.css
new file mode 100644
index 0000000..0dd338f
--- /dev/null
+++ b/html/assets/css/admin.css
@@ -0,0 +1,150 @@
+:root {
+   --wiki-btn-blue: #337ab7;
+   --wiki-btn-cyan: #5bc0de;
+   --wiki-btn-grey: #c9c9c9;
+   --wiki-btn-grey-light: #c9c9c999;
+}
+
+.wiki .manage {
+    width: 100%;
+    max-width: 1600px;
+    margin: 0 auto 2em;
+}
+.wiki .manage.maximized { max-width: 1960px; }
+.wiki .manage.minimized { max-width: 960px; }
+.wiki .manage.edit-post { max-width: 1420px; }
+
+.wiki .edit-post textarea[name=intro] { height: 12vh; }
+.wiki .edit-post textarea[name=body] {
+   height: calc(100vh - 492px);
+   min-height:320px;
+   font-family: Consolas, 'Ubuntu Mono','Courier New', Courier, monospace;
+   color: #333;
+}
+
+.wiki .edit-post .post-media button.over-bar { margin: -26px 0 0 0; }
+.wiki .edit-post .post-media ul {
+   border: 1px solid #ccc;
+   border-radius: 4px;
+   padding: 6px;
+}
+
+.wiki .edit-post .post-media ul li {
+   border-bottom: 1px solid #ddd;
+   list-style-type: none;
+   padding: 3px 6px;
+
+   display: flex;
+   justify-content: space-between;
+   align-items: center;
+}
+.wiki .edit-post .post-media ul li:last-child { border-bottom: none ;}
+.wiki .edit-post .post-media ul li:hover { background: #eee; }
+
+.wiki .manage h2 {
+   font-size: 20px;
+   color: #445;
+   margin: 20px 0;
+}
+
+.wiki .manage.edit-post textarea { width: 100% !important;}
+.wiki .manage.edit-post .select2-selection { min-height: 34px; }
+
+.wiki .manage.edit-post select#status.published {
+   background-color: #5cb85c;
+   border-color: #4cae4c;
+   color: #fff;
+   text-align: center;
+}
+.wiki .manage.edit-post select#status option {
+   background: #fff;
+   color: #333;
+}
+
+/* --- optional fields: defaut=hide --- */
+
+.wiki .edit-post .optional label {
+   margin-bottom: 1em;
+   padding-bottom: .5em;
+   border-bottom: 1px solid var(--wiki-btn-grey-light)
+}
+.wiki .edit-post .optional label.show {
+   margin-bottom: unset;
+   border: none;
+}
+
+
+.wiki .edit-post .optional label:hover {
+   cursor: pointer;
+   color: var(--wiki-btn-blue);
+}
+.wiki .edit-post .optional label::after { float: right; content: "+"; }
+.wiki .edit-post .optional label.show::after { content: "–"; }
+.wiki .edit-post .optional label + div { display: none; }
+.wiki .edit-post .optional label.show + div { display: block; }
+
+
+.alert.alert-info.title-bar { min-height: 52px; margin-top: 20px; }
+.alert.alert-info.title-bar button { margin-left: 8px; }
+
+.wiki .title-bar {
+   display: flex;
+   justify-content: space-between;
+   align-items: center;
+   padding: 8px 8px 8px 16px;
+}
+
+.wiki .action-btn button { float: right; }
+
+.wiki .top-bar { padding: 4px 0; }
+
+.wiki .top-bar .breadcrumb .btn {
+   margin-left: 0;
+   margin-right: 8px;
+   border-radius: 3px;
+   color: var(--wiki-btn-blue);
+}
+
+.wiki .top-bar .btn:hover {
+   background-color: var(--wiki-btn-grey-light);
+}
+.wiki .top-bar .btn.selected {
+   color: #fff;
+   background-color: var(--wiki-btn-blue);
+}
+
+
+/* --- dataTables --- */
+
+.wiki .manage .dataTable tbody tr:hover { background: #f8f8f8; }
+.wiki .manage .dataTable .dt-actions { width: 48px; text-align: right }
+
+/* --- unpublished posts -- */
+.wiki .manage .dataTable .fa-eye-slash { color: #999; }
+
+
+.wiki .js-copy:hover::after {
+   opacity: 0;
+   pointer-events: none;
+   background: #ddd7;
+   border-radius: 2px;
+   content: "Copy";
+   padding: .25em .75em;
+   position: absolute;
+   z-index: 10;
+   transform-origin: top;
+   margin-top: -16px;
+   transform: translate(-50%, 0);
+}
+ 
+.wiki .js-copy.copied:hover::after {
+   content: "Αντιγράφηκε";
+   opacity: 1;
+   margin-top: -22px;
+   transform: translate(-50%, 0);
+   transition: all 0.18s ease-out 0.18s;
+   background: #eee;
+   border: 1px solid #ddd9;
+}
+
+ 
\ No newline at end of file
diff --git a/html/assets/css/normalize.css b/html/assets/css/normalize.css
new file mode 100644
index 0000000..192eb9c
--- /dev/null
+++ b/html/assets/css/normalize.css
@@ -0,0 +1,349 @@
+/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */
+
+/* Document
+   ========================================================================== */
+
+/**
+ * 1. Correct the line height in all browsers.
+ * 2. Prevent adjustments of font size after orientation changes in iOS.
+ */
+
+html {
+  line-height: 1.15; /* 1 */
+  -webkit-text-size-adjust: 100%; /* 2 */
+}
+
+/* Sections
+   ========================================================================== */
+
+/**
+ * Remove the margin in all browsers.
+ */
+
+body {
+  margin: 0;
+}
+
+/**
+ * Render the `main` element consistently in IE.
+ */
+
+main {
+  display: block;
+}
+
+/**
+ * Correct the font size and margin on `h1` elements within `section` and
+ * `article` contexts in Chrome, Firefox, and Safari.
+ */
+
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+/* Grouping content
+   ========================================================================== */
+
+/**
+ * 1. Add the correct box sizing in Firefox.
+ * 2. Show the overflow in Edge and IE.
+ */
+
+hr {
+  box-sizing: content-box; /* 1 */
+  height: 0; /* 1 */
+  overflow: visible; /* 2 */
+}
+
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+
+pre {
+  font-family: monospace, monospace; /* 1 */
+  font-size: 1em; /* 2 */
+}
+
+/* Text-level semantics
+   ========================================================================== */
+
+/**
+ * Remove the gray background on active links in IE 10.
+ */
+
+a {
+  background-color: transparent;
+}
+
+/**
+ * 1. Remove the bottom border in Chrome 57-
+ * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
+ */
+
+abbr[title] {
+  border-bottom: none; /* 1 */
+  text-decoration: underline; /* 2 */
+  text-decoration: underline dotted; /* 2 */
+}
+
+/**
+ * Add the correct font weight in Chrome, Edge, and Safari.
+ */
+
+b,
+strong {
+  font-weight: bolder;
+}
+
+/**
+ * 1. Correct the inheritance and scaling of font size in all browsers.
+ * 2. Correct the odd `em` font sizing in all browsers.
+ */
+
+code,
+kbd,
+samp {
+  font-family: monospace, monospace; /* 1 */
+  font-size: 1em; /* 2 */
+}
+
+/**
+ * Add the correct font size in all browsers.
+ */
+
+small {
+  font-size: 80%;
+}
+
+/**
+ * Prevent `sub` and `sup` elements from affecting the line height in
+ * all browsers.
+ */
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+sup {
+  top: -0.5em;
+}
+
+/* Embedded content
+   ========================================================================== */
+
+/**
+ * Remove the border on images inside links in IE 10.
+ */
+
+img {
+  border-style: none;
+}
+
+/* Forms
+   ========================================================================== */
+
+/**
+ * 1. Change the font styles in all browsers.
+ * 2. Remove the margin in Firefox and Safari.
+ */
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  font-family: inherit; /* 1 */
+  font-size: 100%; /* 1 */
+  line-height: 1.15; /* 1 */
+  margin: 0; /* 2 */
+}
+
+/**
+ * Show the overflow in IE.
+ * 1. Show the overflow in Edge.
+ */
+
+button,
+input { /* 1 */
+  overflow: visible;
+}
+
+/**
+ * Remove the inheritance of text transform in Edge, Firefox, and IE.
+ * 1. Remove the inheritance of text transform in Firefox.
+ */
+
+button,
+select { /* 1 */
+  text-transform: none;
+}
+
+/**
+ * Correct the inability to style clickable types in iOS and Safari.
+ */
+
+button,
+[type="button"],
+[type="reset"],
+[type="submit"] {
+  -webkit-appearance: button;
+}
+
+/**
+ * Remove the inner border and padding in Firefox.
+ */
+
+button::-moz-focus-inner,
+[type="button"]::-moz-focus-inner,
+[type="reset"]::-moz-focus-inner,
+[type="submit"]::-moz-focus-inner {
+  border-style: none;
+  padding: 0;
+}
+
+/**
+ * Restore the focus styles unset by the previous rule.
+ */
+
+button:-moz-focusring,
+[type="button"]:-moz-focusring,
+[type="reset"]:-moz-focusring,
+[type="submit"]:-moz-focusring {
+  outline: 1px dotted ButtonText;
+}
+
+/**
+ * Correct the padding in Firefox.
+ */
+
+fieldset {
+  padding: 0.35em 0.75em 0.625em;
+}
+
+/**
+ * 1. Correct the text wrapping in Edge and IE.
+ * 2. Correct the color inheritance from `fieldset` elements in IE.
+ * 3. Remove the padding so developers are not caught out when they zero out
+ *    `fieldset` elements in all browsers.
+ */
+
+legend {
+  box-sizing: border-box; /* 1 */
+  color: inherit; /* 2 */
+  display: table; /* 1 */
+  max-width: 100%; /* 1 */
+  padding: 0; /* 3 */
+  white-space: normal; /* 1 */
+}
+
+/**
+ * Add the correct vertical alignment in Chrome, Firefox, and Opera.
+ */
+
+progress {
+  vertical-align: baseline;
+}
+
+/**
+ * Remove the default vertical scrollbar in IE 10+.
+ */
+
+textarea {
+  overflow: auto;
+}
+
+/**
+ * 1. Add the correct box sizing in IE 10.
+ * 2. Remove the padding in IE 10.
+ */
+
+[type="checkbox"],
+[type="radio"] {
+  box-sizing: border-box; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Correct the cursor style of increment and decrement buttons in Chrome.
+ */
+
+[type="number"]::-webkit-inner-spin-button,
+[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/**
+ * 1. Correct the odd appearance in Chrome and Safari.
+ * 2. Correct the outline style in Safari.
+ */
+
+[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  outline-offset: -2px; /* 2 */
+}
+
+/**
+ * Remove the inner padding in Chrome and Safari on macOS.
+ */
+
+[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/**
+ * 1. Correct the inability to style clickable types in iOS and Safari.
+ * 2. Change font properties to `inherit` in Safari.
+ */
+
+::-webkit-file-upload-button {
+  -webkit-appearance: button; /* 1 */
+  font: inherit; /* 2 */
+}
+
+/* Interactive
+   ========================================================================== */
+
+/*
+ * Add the correct display in Edge, IE 10+, and Firefox.
+ */
+
+details {
+  display: block;
+}
+
+/*
+ * Add the correct display in all browsers.
+ */
+
+summary {
+  display: list-item;
+}
+
+/* Misc
+   ========================================================================== */
+
+/**
+ * Add the correct display in IE 10+.
+ */
+
+template {
+  display: none;
+}
+
+/**
+ * Add the correct display in IE 10.
+ */
+
+[hidden] {
+  display: none;
+}
diff --git a/html/assets/css/wiki.css b/html/assets/css/wiki.css
new file mode 100644
index 0000000..7599de9
--- /dev/null
+++ b/html/assets/css/wiki.css
@@ -0,0 +1,348 @@
+/** Wiki sections
+ * (main layout css-classes)
+ * -----------------------------------------------------------------------------
+ *  .wiki {
+ *      .top-bar {
+ *          .breadcrumb
+ *          .admin
+ *      }
+ *      .side-bar {
+ *          .search
+ *          .categories
+ *      }
+ *      .content
+ *  }
+ * -----------------------------------------------------------------------------
+ */
+
+
+/* Variables
+ * ----------------------------------------------------------------------------
+ */
+
+:root {
+    --wiki-blue: #337ab7;
+    --wiki-blue-opaque: #337ab799;
+    --wiki-blue-dark: #082e44;
+    --wiki-orange: #f47920;
+    --wiki-orange-opaque: #f4792099;
+    --wiki-grey-background: #eeedeb;
+    --wiki-red: #d13;
+}
+
+
+
+/* main layout classes
+ * ----------------------------------------------------------------------------
+ */
+
+.wiki .top-bar {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 10px 14px;
+}
+
+.wiki .top-bar .breadcrumb { margin: 0; padding: 0; background: none; }
+
+  
+.wiki .top-bar .admin .dropdown-menu .fas {
+    width: 32px;
+    text-align: center;
+}
+
+
+
+/* category list menu
+ * -----------------------------------------------------------------------------
+ */
+
+ .wiki .side-bar { padding-top: 20px; }
+ .wiki .side-bar h3 {
+    font-weight: 600; font-size: 1.4em;
+    color: var(--wiki-blue);
+}
+
+ /* --- ul > li > a --- */
+
+.wiki .side-bar ul { list-style: none; padding: 0; }
+.wiki .side-bar ul li { margin: 0.5em 0; }
+.wiki .side-bar  ul li a {
+    display: flex;
+    padding: .2em;
+    background: #4442;
+    border-radius: 6px;
+    transition: background 0.3s;
+}
+.wiki .side-bar  ul li a:hover,
+.wiki .side-bar  ul li a:active {
+    background: #cde;
+    text-decoration: none;
+}
+
+/* --- li > a > span --- */
+
+.wiki .side-bar  ul li a span {
+    display: block;
+    align-self: center;
+    padding: .3em;
+}
+.wiki .side-bar  ul li a .label {
+    font-size: 13px;
+    color: var(--wiki-blue-dark);
+    flex-grow: 1;
+    text-align: left;
+    padding-left: 1em;
+    border-radius: 6px;
+    white-space: normal;
+    font-weight: 400;
+}
+
+/* --- inner --- */
+
+.wiki .side-bar  ul .inner {
+    padding-left: 1em;
+    overflow: hidden;
+    display: none;
+}
+.wiki .side-bar  ul .inner.show { display: block; }
+
+/* --- has-childs | toggler --- */
+
+.wiki .side-bar  ul li a.has-childs { background: #9bf4; }
+.wiki .side-bar  ul li a.has-childs:hover { background: #cde;}
+
+.wiki .side-bar  ul li a.has-childs .label {
+    font-weight: 600;
+    border-radius: 6px 0 0 6px;
+    width: calc(100% - 36px);
+}
+
+.wiki .side-bar  ul li a.has-childs .toggler {
+    text-align: center;
+    width: 32px;
+    font-size: 15px;
+    border-radius: 4px;
+    background: #7774;
+    font-weight: 700;
+}
+.wiki .side-bar  ul li a.has-childs .toggler:hover {
+    background: var(--wiki-blue);
+    color: #fff;
+}
+.wiki .side-bar ul li a.selected {
+    background: var(--wiki-orange-opaque);
+}
+.wiki .side-bar ul li a:hover,
+.wiki .side-bar ul li a:active,
+.wiki .side-bar ul li a:focus,
+.wiki .side-bar ul li a:visited,
+.wiki .side-bar ul li a:link,
+.wiki .side-bar ul li a span:hover,
+.wiki .side-bar ul li a span:active,
+.wiki .side-bar ul li a span:focus,
+.wiki .side-bar ul li a span:visited,
+.wiki .side-bar ul li a span:link,
+.wiki .side-bar ul li a span:target { text-decoration: none !important; }
+
+
+
+.wiki .post img { max-width: 100%; }
+
+
+
+/** breadcrumb
+ * -----------------------------------------------------------------------------
+ */
+
+.wiki .breadcrumb { counter-reset: var(--wiki-blue); }
+.wiki .breadcrumb i.fas { padding: 0 6px; }
+
+
+
+
+/** content
+ * -----------------------------------------------------------------------------
+ */
+
+.wiki .content--wrapper {
+    max-width: 1024px;
+    width: 100%;
+    margin: 1em auto;
+    padding: 0 2em 2em 2em;
+}
+.wiki .content h2 {
+    font-weight: 700;
+    font-size: 24px;
+    padding: 8px 3em 1em 0; /* 1em 3em 1em 0; */
+    color: var(--wiki-blue-dark);
+}
+.wiki .content h3 {
+    font-weight: 600; font-size: 1.4em;
+    padding: 1em 3em 1em 0;
+    color: var(--wiki-blue);
+    border-bottom: 1px dashed var(--wiki-blue-opaque);
+}
+.wiki .content h3 span { font-weight: 400; color: #444; }
+.wiki .content p {
+    line-height: 150%;
+    padding: 5px 0;
+}
+
+/* --- post: medias -- */
+
+.wiki .content--wrapper .medias {
+    padding: 2em 0 1em;
+    border-top: 1px solid var(--wiki-grey-background);
+}
+.wiki .content--wrapper .medias ol li {
+    margin-left: -12px;
+    padding: 2px 8px;
+}
+.wiki .content--wrapper .medias ol li::marker {
+    font-size: 12px;
+    color: #999;
+}
+
+/* --- post: tags --- */
+
+.wiki .content--wrapper .tags {
+    padding: 2em 0 1em;
+    border-top: 1px solid var(--wiki-grey-background);
+}
+.wiki .content--wrapper .tags a {
+    color: #444;
+    background-color: var(--wiki-grey-background);
+    padding: 6px 12px;
+    margin: 6px;
+    border-radius: 3px;
+}
+
+
+
+
+/** sub-categories on category page
+ * -----------------------------------------------------------------------------
+ */
+
+.wiki .category-childs { margin: 1em; padding: 1em; }
+
+.wiki .category-childs a {
+    display: inline-block;
+    margin: .5em;
+    padding: .2em 2em;
+    border-radius: 2em;
+    border: 1px solid var(--wiki-blue);
+    line-height: 2em;
+    font-weight: 600;
+    transition: background 0.3s;
+}
+
+.wiki .category-childs a:hover {
+    background-color: var(--wiki-blue);
+    color: #fffe;
+    text-decoration: none;
+}
+
+
+
+
+
+/** articles-list
+ * -----------------------------------------------------------------------------
+ *   22   |  Title of artivle 
+ *  July  |  path / of / categories
+ *  2023  |  * some intro of article
+ * -----------------------------------------------------------------------------
+ */
+.wiki .post-card {
+    padding: .5em;
+    margin: 1em;
+    border-bottom: 1px solid #7773;
+    display: flex;
+}
+.wiki .post-card .post-card--content {
+    flex-grow: 1;
+    width: calc(100% - 90px);
+}
+.wiki .post-card h3 { padding: 0; margin: 0; border: none; }
+.wiki .post-card h3 a { display: block; }
+.wiki .post-card h3 a:hover { color: #f47920; }
+.wiki .post-card .category { color: #566; }
+.wiki .post-card .intro {
+    font-style: italic;
+    font-size: 16px;
+}
+/* --- date block --- */
+.wiki .date {
+    display: flex;
+    flex-direction: column;
+    width: 90px;
+}
+.wiki .date p {
+    padding: 0; margin: 0;
+    line-height: 115%;
+    text-align: center;
+}
+.wiki .date .day { font-size: 24px; color: var(--wiki-blue-opaque); }
+.wiki .date .month { font-size: 16px; color: #555; }
+.wiki .date .year { font-size: 12px; color: #666; }
+
+
+
+
+
+/** post (article)
+ * -----------------------------------------------------------------------------
+ */
+
+
+
+.wiki .post h2 { padding-bottom: 0; }
+
+.wiki .post h2 span { float:right; margin-right: -3em;}
+
+.wiki .post .intro {
+    font-style: italic;
+    font-size: 18px;
+    color: var(--wiki-blue-dark);
+    padding-bottom: 1em;
+}
+
+.wiki .post .post--date {
+    padding: 0;
+    color: var(--wiki-blue);
+}
+
+.wiki .article-body img {
+    display: block;
+    max-width: 100%;
+    margin: 1em auto;
+}
+/*
+.wiki .article-body a.modal-toggler {
+    padding: 0 16px;
+    background: #def;
+    color: #334;
+    border-radius: 3px;
+    text-decoration: none;
+    border: 1px solid var(--wiki-blue-opaque);
+}
+.wiki .article-body a.modal-toggler:hover { background: var(--wiki-blue); color: #fff; }
+*/
+.wiki .article-body table {
+    margin: 20px auto;
+    min-width: 67%;
+    border-spacing: 6px 0;
+    border-collapse: separate;
+}
+.wiki .article-body table tr { margin: 4px; }
+.wiki .article-body table thead th {
+    color: var(--wiki-btn-blue);
+    border-bottom: 3px solid var(--wiki-blue);
+    padding: 0 8px;
+}
+.wiki .article-body table tbody td {
+    padding: 6px 8px;
+    border-bottom: 1px solid var(--wiki-grey-background);
+}
\ No newline at end of file
diff --git a/html/assets/js/edit-post.js b/html/assets/js/edit-post.js
new file mode 100644
index 0000000..49446ce
--- /dev/null
+++ b/html/assets/js/edit-post.js
@@ -0,0 +1,612 @@
+// Globals
+// -----------------------------------------------------------------------------
+
+// NOTE:
+// Variable `id` is defined before evaluating this script
+// id (int) : the id of edited post (or 0 if new post)
+
+var post;
+var categories = [
+    // Nope! root can not be a post's category ... { id: 0 , label: 'Ρίζα (root)' }
+];
+var tags = [];      // array of integers
+var files = [];     // array of { id:.., title:.., type:.., path:.. } records
+
+const files_root = 'https://cdn.sklavenitis.co.gr/';    // files root firectory
+
+
+
+var pageUrl = new URL(window.location.href);
+
+// an alternative--id when a post id not exists (needed for file-upload)
+// ... consist of a 6-digit date string + random number up to 999
+const yymmdd = new Date().toISOString().slice(2, 10).replaceAll('-','');
+var rnd999 = Math.floor(Math.random() * 1000);
+var altID = (id == 0) ? ( yymmdd +'-'+ rnd999.toString() ) : id;
+
+
+
+
+// Supplamentary functions
+// -----------------------------------------------------------------------------
+
+// function for sorting an array by 'label' attribute
+// --- -- -- - - -
+function compare_label (a,b) {
+    if ( a.label < b.label ) { return -1; }
+    if ( a.label > b.label ) { return 1; }
+    return 0;
+}
+
+// return category record by category-id
+// --- -- -- - - -
+function category_record(id) {
+    var record = 0;
+    categories.forEach(el => { if (el.id == id) record = el; });
+   
+    return record;
+}
+
+
+
+
+// Modal HTML Creators
+// -----------------------------------------------------------------------------
+
+const modal_header = (title) => {
+    return [
+        '<div class="modal-header">',
+            '<button type="button" class="close" data-dismiss="modal" aria-label="Close">',
+                '<span aria-hidden="true">&times;</span>',
+            '</button>',
+            '<h4 class="modal-title" id="myModalLabel">',
+                title,
+            '</h4>',
+        '</div>'
+    ].join('\n');
+}
+
+
+const upload_file_form = () => {
+    return [
+        '<form method="POST" id="file_upload_form" name="upload_file_form">',
+
+            '<div class="modal-body">',
+
+                '<input type="hidden" name="folder" value="'+ altID +'">',
+
+                '<div class="form-group">',
+                    '<label for="title">Τίτλος/Περιγραφή για το Αρχείο</label>',
+                    '<input type="text" class="form-control " value="" name="title" id="title" placeholder="Τίτλος για το Αρχείο" required="">',
+                '</div>',
+
+                '<div class="row">',
+
+                    '<div class="form-group col-md-7">',
+                        '<label class="control-label" for="file">Εισαγωγή Αρχείου</label>',
+                        '<input class="form-control" type="file" id="file" name="file" required="">',
+                    '</div>',
+
+                    '<div class="form-group col-md-5">',
+                        '<label class="control-label" for="category_id">Είδος</label>',
+                        '<select class="form-control" id="reference" name="reference" required="">',
+                            '<option"></option>',
+                            '<option value="1">Παραπομπή (εμφανίζεται)</option>',
+                            '<option value="0">Βοηθητικό αρχείο (κρυφό)</option>',
+                        '</select>',
+                    '</div>',
+
+                '</div>',
+
+            '</div>',
+
+            '<div class="modal-footer">',
+                '<div class="row">',
+                    '<div class="form-actions">',
+                        '<div class="col-lg-3 col-lg-offset-6 col-md-4 col-md-offset-4 col-xs-6">',
+                            '<buton type="button" class="btn btn-default js-modal-close col-xs-12" data-dismiss="modal">',
+                                'Κλείσιμο',
+                            '</button>',
+                        '</div>',
+                        '<div class="col-lg-3 col-md-4 col-xs-6">',
+                            '<button class="btn btn-success col-xs-12" type="submit">Καταχώριση</button>',
+                        '</div>',
+                    '</div>',
+                '</div>',
+            '</div>',
+
+        '</form>'
+    ].join('\n');
+}
+
+
+const preview_article = (title, intro, body) => {
+    return [
+        '<div class="modal-body">',
+            '<div class="post">',
+
+                '<h2>'+ title +'</h2>',
+
+                ((intro == '') ? '' : ('<div class="intro">'+ intro +'</div>')),
+
+                '<div class="article-body">',
+                    marked.parse(body, { sanitize: true }),
+                '</div>',
+             
+            '</div>',
+        '</div>',
+        '<div class="modal-footer">',
+            '<div class="row">',
+                '<div class="form-actions">',
+                    '<div class="col-md-4 col-md-offset-4 col-xs-6 col-xs-offset-3">',
+                        '<buton type="button" class="btn btn-default js-modal-close col-xs-12" data-dismiss="modal">',
+                            'Κλείσιμο',
+                        '</button>',
+                    '</div>',
+                '</div>',
+            '</div>',
+        '</div>'
+    ].join('\n');
+}
+
+
+$(document).ready(function() {
+
+    // When document is ready
+    // -------------------------------------------------------------------------
+
+
+    // inti category (select2)
+    // ...
+    $("#category_id").select2({
+        placeholder: 'Γονική Κατηγορία',
+        width: '100%'
+    });
+
+
+    // init tags (select2)
+    // ...
+    $('#tags').select2({
+        placeholder: 'Ετικέτες (tags/keywords)',
+        width: '100%',
+        tags: true
+    });
+
+
+    // init editor (tiny MCE)
+    // tinymce.init({
+    //     selector: 'form textarea[name=body]',
+    //     language: 'el',
+    //     menubar: true
+    // });
+    // --- -- -- - - -
+
+
+    /** preload content
+     * --- -- -- - - -
+     * get post
+     * get categories
+     * get tags
+     * update content (form-elements)
+     */
+    if (id) {   // if an `id` is given, load post .. then init_form
+
+        $.getJSON( "/wiki/ajax", { action: "get_post", id: id } )
+        .done( function (data) {
+            post = data;            // keep post
+
+            // update fields' values
+            $('input[name=id]').val(post.id);           // id
+            $('input[name=title]').val(post.title);     // title
+            $('textarea[name=intro]').val(post.intro);  // intro
+            $('textarea[name=body]').val(post.body);    // body         
+            $('input[name=status]').prop(               // status
+                'checked',
+                ((post.status==1)? true : false))
+            .trigger('change');
+
+            $('#post-info').html('Δημιουργία: '+post.creation_date+'<br>Τελευταία Ενημέρωση: '+ post.update_date);
+
+            $('#delete').prop( "disabled", false );     // enable delete button
+
+            // if intro exist, show intro (optinal) field
+            if ((post.intro != null) && (post.intro != '')) {
+                $('.optional label[for=intro]').addClass('show');   // unhide section
+            }
+
+            // parse media files; then draw
+            if (post.medias_json != null) {
+                files = JSON.parse(post.medias_json);
+                $('.optional label[for=media]').addClass('show');   // unhide section
+            }
+            draw_files_list();      // then draw the files list
+            
+            init_form_values();     // init all (other) values
+        });
+
+    } else {    // else ... just init_form
+        $('#delete').prop( "disabled", true );     // disable delete button for new post attempt
+        // depricated $('select[name=status').val('0').trigger('change'); // pre-selecd unpublished
+        init_form_values();
+    }
+
+
+
+    /**
+     * load categories and tags;
+     * if not a new post (id!=0) update form elemnts with post's values
+     */
+    function init_form_values() {
+
+        $.when(     // when loaded posts and categories
+
+            $.getJSON( "/wiki/ajax", { action: "get_categories_array", exclude: '0' } ),
+
+            $.getJSON( "/wiki/ajax", { action: "get_all_tags" } )
+
+        ).done( function( categories_response, tags_response ) {
+
+            // construct categories data
+            // ---
+            Object.keys(categories_response[0]).forEach( key => {
+                cat = categories_response[0][key];
+                categories.push({
+                    id: cat.rec.id,
+                    label: cat.breadcrumb.replaceAll('\t', ' / ')
+                });
+            });
+            categories.sort( compare_label );  // sort categories by breadcrumb
+
+            // construct tags data
+            // ---
+            Object.keys(tags_response[0]).forEach( key => {
+                tag = tags_response[0][key];
+                tags.push({
+                    id: tag.id,
+                    label: tag.name
+                });
+            });
+
+            // pass categories and tags options onto select2 elements
+            // --- -- -- - - -
+            if (id == 0) {
+                set_parent_options( $('#category_id'), categories );
+                set_parent_options( $('#tags'), tags );
+
+            } else {
+                // setup category_id options; select post's chosen category-id
+                set_parent_options( $('#category_id'), categories, post.category_id );
+
+                // parse selected tags
+                // ---
+                var selected_tag_ids = [];
+                if (post.tags_json != null) {
+                    var selected_tags = JSON.parse(post.tags_json);
+                    selected_tags.forEach( itag => { selected_tag_ids.push(itag.id); })
+                }
+                // setup tags options; select post's chosen tags
+                set_parent_options( $('#tags'), tags, selected_tag_ids );
+
+                // ALSO: if tags selectd, show tags field
+                if (selected_tag_ids.length != 0) { $('.optional label[for=tags]').addClass('show'); }
+            }
+
+        });
+
+    }
+
+
+    /** set_parent_options()
+     * 
+     * -> create options for parents <select>
+     * -> choose selected parent
+     * 
+     * NOTE:
+     * the targer <select> should be a select2 control
+     * 
+     * @param parents (array): array of parents
+     * @param selected (int): selected parent
+     */
+    function set_parent_options(selector, list, selected_value = false) {
+
+        list.forEach( li => {   // attach options into <select> control
+            selector.append(`<option value="${li.id}">${li.label}</option>`);
+        });
+
+        if (selected_value !== false) {     // mark selected option(s)
+            selector.val(selected_value).trigger('change');
+        }
+        else { selector.val(null).trigger('change'); }
+    }
+
+
+    /** draw_files_list
+     * --- -- -- - - -
+     */
+    function draw_files_list() {
+        var li_list = [];
+        var ref_icon, ref_class;
+
+        files.forEach( item => {
+            // preapre [show|hide]-file as reference
+            if (item.reference == 1) {
+                ref_icon = '<i class="fas fa-eye"></i>';
+                ref_class = 'btn-default';
+    
+            } else {
+                ref_icon = '<i class="fas fa-eye-slash"></i>';
+                ref_class = 'btn-disabled';
+            }
+
+            var copy = [    // copy button
+                '<button type="button" class="btn btn-xs btn-default js-copy"',
+                    'data-url="' + item.path + '">',
+                    '<i class="far fa-clone"></i>',
+                '</button>'
+            ].join('');
+            var ref = [   // show|hide (is_reference)
+                '<button type="button" class="btn btn-xs '+ ref_class +' js-reference"',
+                    'data-id="' + item.id + '">',
+                    ref_icon,
+                '</button>'
+            ].join('');
+            var del = [    // delete button
+                '<button type="button" class="btn btn-xs btn-danger js-delete"',
+                    'data-id="' + item.id + '">',
+                    '<i class="fas fa-trash-alt"></i>',
+                '</button>'
+            ].join('');
+            var option = [  // li html
+                '<li>',
+                    '<div class="text">' + item.title + '</div>',
+                    '<div class="actions">',
+                        ref, ' ', copy, ' ',  del,
+                    '</div>',
+                '</li>'
+            ].join('');
+            li_list.push(option);   // push to li_list
+        });
+        $('#files_list').html( li_list.join('\n') );
+
+    }
+
+
+
+    // When form's action-buttons are clicked
+    // -------------------------------------------------------------------------
+
+
+    // form submit
+    // --- -- -- - - -
+    $('.edit-post form').submit( event => {
+        event.preventDefault();
+
+        // rearrange tags to old and new ones
+        // ---
+        var old_tags = [];
+        var new_tags = [];
+        var tags = $('#tags').select2('data');      
+        tags.forEach( t => {
+            if (!parseInt(t.id)) {
+                 new_tags.push(t.text);
+            } else {    old_tags.push(t.id); }
+        })
+
+        var attachments = [];
+        // attachments (array) of "`media_id`;`reference`" strings
+        files.forEach( f => { attachments.push( f.id +';'+ f.reference ) });
+
+        // prepare data to POST
+        // ---
+        var data = {
+            id: parseInt($('.edit-post form input[name=id]').val()),
+            title: $('.edit-post form input[name=title]').val(),
+            category_id: parseInt($('#category_id').select2('data')[0].id),
+            intro: $('.edit-post form textarea[name=intro]').val(),
+            body: $('.edit-post form textarea[name=body]').val(),
+            status: (($('input[name=status]').is(":checked")) ? 1 : 0),
+            tags: old_tags,
+            new_tags: new_tags,
+            media: attachments
+        };
+
+        // select action url (add or update)
+        // ---
+        var request = '/wiki/ajax?action=' + ((data.id == 0) ? 'add_post' : 'update_post');
+
+        // send POST (ajax) request
+        $.post(request, data)
+        .done(function( data ) {
+            window.location.href = '/wiki/admin?action=posts';      // seems ok; bach to articles
+        });       
+
+    });
+
+
+    // go-back (to posts)
+    // --- -- -- - - -
+    $('#go-back').click( event => {
+        window.location.href = '/wiki/admin?action=posts';
+    });
+
+
+    // delete
+    // --- -- -- - - -
+    $('#delete').click( event => {
+        // ask before deletion
+        swal({
+            title: 'Είστε βέβαιος;',
+            html: "Ζητήσατε να διαγραφεί το άρθρο.<br>Παρακαλώ επιβεβαιώστε την διαγραφή.<br>ΠΡΟΣΟΧΗ: Δεν θα έχετε την δυνατότητα αναίρεσης!",
+            type: 'warning',
+            showCancelButton: true,
+            confirmButtonColor: '#3085d6',
+            cancelButtonColor: '#d33',
+            cancelButtonText: 'Ακύρωση',
+            confirmButtonText: 'Ναι, να διαγραφεί',
+            showLoaderOnConfirm: true,
+            preConfirm: function() {
+                return new Promise(function(resolve) {
+                    $.getJSON( "/wiki/ajax", { action: "delete_post", id: id } )
+                    .done( function (data) {
+                        // return to posts-administration
+                        window.location.href = '/wiki/admin?action=posts';
+                    });
+                });
+            }, 
+            allowOutsideClick: false
+        }).catch(swal.noop);
+
+    });
+
+
+
+    // copy url button
+    // --- -- -- - - -
+    $('.wiki').on('click', 'button.js-copy', function (e) {
+        var copytext = '';   // default: copy nothing
+
+        if ($(this).data('id') !== undefined) {
+            copytext = pageUrl.origin +'/wiki/post?id=' + $(this).data('id');
+        }
+
+        if ($(this).data('url') !== undefined) {
+            copytext = files_root + $(this).data('url');
+        }
+        
+        navigator.clipboard
+        .writeText(copytext)
+        .then(() => {   // notify the copy event
+            $(this).addClass('copied');
+            setTimeout( () => { $(this).removeClass('copied'); }, 700);
+        })
+        .catch(() => {
+            console.log("error on coping text");
+        });
+    });
+
+
+
+    // delete (remove) file button
+    // --- -- -- - - -
+    $('.wiki').on('click', 'button.js-delete', function (e) {
+        var media_id = $(this).data('id');
+
+        // remove from files array the one with id == media_id
+        // ---
+        var temp = [];
+        files.forEach( it => { if (it.id != media_id) temp.push(it); });
+
+        files = temp;           // re-define files
+        draw_files_list();      // then re-draw files list
+    });
+
+
+
+    
+
+    // show|hide file as referece button
+    // --- -- -- - - -
+    $('.wiki').on('click', 'button.js-reference', function (e) {
+        var id = $(this).data('id');
+        
+        // toggle reference attribute of item with `id` = id
+        // ---
+        var temp = [];
+        files.forEach( it => {
+            if (it.id == id) {
+                it.reference = (it.reference==0) ? 1 : 0;
+            }
+            temp.push(it)
+        });
+
+        files = temp;           // re-define files
+        draw_files_list();      // then re-draw files list
+    });
+
+
+
+
+
+    /** When modal show-up
+     * -------------------------------------------------------------------------
+     * ... prepare the manage-category form 
+     * ... update select2 with possible parents
+     */
+    $('#editorModal').on('show.bs.modal', event => {
+        let button = $(event.relatedTarget);    // Button that triggered the modal
+        let action = button.data('action');     // action
+        // var modal = $(this);    // modal object     
+        
+        // update modal literature
+
+        switch (action) {
+            case 'upload_file':
+                $("#editorModal .modal-content").html(
+                    modal_header('Εισαγωγή Αρχείου') + upload_file_form()
+                );
+                break;
+            
+                case 'preview':
+                    let preview = preview_article(
+                        $('.edit-post form input[name=title]').val(),
+                        $('.edit-post form textarea[name=intro]').val(),
+                        $('.edit-post form textarea[name=body]').val()
+                    );
+                    $("#editorModal .modal-content").html( modal_header('Προεπισκόπηση') + preview);
+                    break;
+
+            default:
+                // do nothing
+        }
+
+    });
+
+
+
+    /** submit upload file event
+     * -------------------------------------------------------------------------
+     */
+    $('#editorModal').on('submit', 'form[name=upload_file_form]', function (event) {
+        event.preventDefault();
+
+        // create the FormData object
+        // --- -- -- - - -
+        var fd = new FormData(document.getElementById('file_upload_form'));
+
+        // post the form (via ajax)
+        $.ajax({
+            url: '/wiki/ajax?action=file_upload',
+            type: 'POST',
+            data: fd,
+            contentType: false,
+            processData: false,
+            dataType: 'json',
+            success: function(response) {   // on success
+
+                if (response.success) {      
+                    files.push({    // ... update files array
+                        id: response.id,
+                        title: response.title,
+                        path: response.path,
+                        type: response.type,
+                        reference: $('#reference').val()
+                    });
+                    draw_files_list();                   
+
+                    $('#editorModal').modal('hide');
+
+                } else {
+                    console('File not uploaded');
+                }
+            }
+        });
+    });
+
+
+    // TODO:
+    // disable links while previewing the article
+    // OR add a target="_blank"
+
+
+});
+
diff --git a/html/assets/js/manage-category.js b/html/assets/js/manage-category.js
new file mode 100644
index 0000000..85a4851
--- /dev/null
+++ b/html/assets/js/manage-category.js
@@ -0,0 +1,287 @@
+// Globals
+// -----------------------------------------------------------------------------
+var categories = [];
+var table;
+
+
+
+// Supplamentary functions
+// -----------------------------------------------------------------------------
+
+// array.indexOf polyfill
+// --- -- -- - - -
+if (!Array.prototype.indexOf)
+{
+  Array.prototype.indexOf = function(elt /*, from*/)
+  {
+    var len = this.length >>> 0;
+
+    var from = Number(arguments[1]) || 0;
+    from = (from < 0)
+         ? Math.ceil(from)
+         : Math.floor(from);
+    if (from < 0)
+      from += len;
+
+    for (; from < len; from++)
+    {
+      if (from in this &&
+          this[from] === elt)
+        return from;
+    }
+    return -1;
+  };
+}
+
+
+// function for sorting an array by 'breadcrumb' attribute
+// --- -- -- - - -
+function compare_breadcrumb (a,b) {
+    if ( a.breadcrumb < b.breadcrumb ) { return -1; }
+    if ( a.breadcrumb > b.breadcrumb ) { return 1; }
+    return 0;
+}
+
+// return category record by category-id
+// --- -- -- - - -
+function category_record(id) {
+    var record = 0;
+    categories.forEach(el => { if (el.id == id) record = el; });
+   
+    return record;
+}
+
+
+// return children of parent
+// --- -- -- - - -
+function childs_of_parents(list) {
+    // if 'list' is integer then make it an one-item list
+    parents = (Number.isInteger(list)) ? [ list ] : list;
+
+    var childs = [];
+
+    if (parents.length == 0) { return []; }
+
+    parents.forEach( pid => {
+        categories.forEach( el => { if (el.parent == pid) childs.push(el.id)});
+    });
+
+    var grandchilds = childs_of_parents(childs);
+
+    return childs.concat(grandchilds);
+}
+
+
+// create actions html (edit and delete buttons)
+// --- -- -- - - -
+function create_actions_html(id) {
+
+    var del, edit;
+
+    del = "";
+
+    edit = [
+        '<button type="button" class="btn btn-xs btn-warning"',
+            'data-toggle="modal" data-target="#manageCategory"',
+            'data-id="'+ id +'">',
+            '<i class="fas fa-pencil-alt"></i>',
+        '</button>'
+    ].join('\n');
+
+    return edit +' '+ del;
+}
+
+
+
+$(document).ready(function() {
+
+    // When document is ready
+    // -------------------------------------------------------------------------
+
+    
+    /** init selec2 element (used to specify parent-category)
+     * --- -- -- - - -
+     */
+    $("#parent_id").select2({
+        placeholder: 'Γονική Κατηγορία',
+        width: '100%',
+        // dropdownParent: "#manageCategory"   // ref: https://github.com/select2/select2-bootstrap-theme/issues/41
+    });
+
+    
+    /** init_table
+     * --- -- -- - - -
+     * get categories
+     * constuct categories array
+     * render dataTable 
+     */
+    function init_table() {
+
+        // get all categories from server (ajax)
+        $.getJSON( "/wiki/ajax", { action: "get_categories_array", exclude: '0' } )
+        .done(function( json ) {
+            // then ...
+
+            // reset categories
+            categories.length = 0;
+
+            // construct (new) categories data
+            Object.keys(json).forEach( key => {
+                el = json[key];
+                categories.push({
+                    id: parseInt(el.rec.id),
+                    title: el.rec.title,
+                    breadcrumb: el.breadcrumb.replaceAll('\t', ' / '),
+                    parent: parseInt(el.rec.parent),
+                    actions: create_actions_html(el.rec.id)
+                });
+            });
+
+            // sort by breadcrumb
+            categories.sort( compare_breadcrumb );
+
+            // destroy previous datatable table instances
+            $('#dt-categories').dataTable().fnClearTable();
+            $('#dt-categories').dataTable().fnDestroy();
+
+            // (re-)create categories datatable
+            table = $('#dt-categories').DataTable({
+                language: { url: '/libs/DataTables/localization/Greek.json' },           
+                data: categories,
+                ordering: false,
+                columns: [
+                    { data: 'breadcrumb' },
+                    { data: 'actions' }
+                ]
+            });
+
+        })
+        .fail(function( jqxhr, textStatus, error ) {
+            console.log( "Request Failed (" + error +")" );
+        });
+
+    }
+    init_table();   // init table on first run
+
+
+
+    /** When modal show-up
+     * -------------------------------------------------------------------------
+     * ... prepare the manage-category form 
+     * ... update select2 with possible parents
+     */
+    $('#manageCategory').on('show.bs.modal', event => {
+        var button = $(event.relatedTarget);        // Button that triggered the modal
+        var id = parseInt( button.data('id') );     // category_id from data-id
+        // var modal = $(this);    // modal object     
+        
+        // update modal literature
+        // ---
+        $('#manageCategory .modal-title').html(             // modal title
+            (id) ? 'Ενημέρωση Κατηγορίας' : 'Δημιουργία Κατηγορίας'
+        );
+        $('#manageCategory form input[name=id]').val( id );     // category id (hidden)
+        $('#manageCategory form input[name=title]').val(    // category title
+            (id) ? category_record(id).title : ""
+        );
+        prepare_parents_element(id);        // prepare <select> for parents
+    })
+
+    /** prepare_parents_element()
+     * ---
+     * @param id (int) : id of selected category
+     * -> Get all posible parents
+     * -> call set_parent_options() to render the options
+     */
+    function prepare_parents_element(id) {
+        var parents = [];
+
+        if (id) {   // get all possible parents
+
+            // id-category and subcategories are fobiden parents
+            var forbiden = childs_of_parents(id);
+            forbiden.push(id);
+
+            // filter catogories adn prepare parents
+            categories.forEach( el => {
+                if (!forbiden.includes(el.id))  {
+                    parents.push({
+                        id: el.id,
+                        breadcrumb: el.breadcrumb,
+                    });
+                }
+            });
+            set_parent_options(parents, category_record(id).parent);
+
+
+        } else {    // new record; all categories are possible parrents
+            categories.forEach( el => {
+                parents.push({
+                    id: el.id,
+                    breadcrumb: el.breadcrumb,
+                });
+            })
+            set_parent_options(parents, -1);
+        }
+    }
+
+    /** set_parent_options()
+     * -> create options for parents <select>
+     * -> choose selected parent
+     * @param parents (array): array of parents
+     * @param selected (int): selected parent
+     */
+    function set_parent_options(parents, selected) {
+        // sort parents by breadcrumb
+        parents.sort( compare_breadcrumb );
+
+        // remove any olded options from select2
+        $('#parent_id option').each(function() { $(this).remove(); });
+
+        // first option is the root category
+        $('#parent_id').append('<option value="0">Root</option>')
+
+        // add all other parent options
+        parents.forEach( i => {
+            $('#parent_id').append(`<option value="${i.id}">${i.breadcrumb}</option>`);
+        });
+
+        if (selected == -1) {   // new category; remove any parent pre-selection
+            $('#parent_id').val(null).trigger('change');
+
+        } else {    // category exists; choose selected parent
+            $('#parent_id').val(selected).trigger('change');
+        }
+    }
+
+
+
+
+    // When form is submited
+    // -------------------------------------------------------------------------
+
+    $('#manageCategory form').submit( event => {
+        event.preventDefault();
+
+        // prepare data to POST
+        var data = {
+            id: parseInt($('#manageCategory form input[name=id]').val()),
+            title: $('#manageCategory form input[name=title]').val(),
+            parent_id: parseInt($('#parent_id').select2('data')[0].id)
+        };
+
+        // select action url (add or update)
+        var request = '/wiki/ajax?action=' + ((data.id == 0)  ? 'add_category' : 'update_category');
+
+        // send POST request
+        $.post(request, data)
+        .done(function( data ) {
+
+            $('#manageCategory').modal('hide');     // when done, close modal
+
+            init_table();       // reload table of categories
+        });       
+
+    });
+
+});
diff --git a/html/assets/js/manage-posts.js b/html/assets/js/manage-posts.js
new file mode 100644
index 0000000..028c773
--- /dev/null
+++ b/html/assets/js/manage-posts.js
@@ -0,0 +1,177 @@
+// Globals
+// -----------------------------------------------------------------------------
+var categories = [];
+var posts = [];
+var table;
+
+var pageUrl = new URL(window.location.href);
+
+
+// Supplamentary functions
+// -----------------------------------------------------------------------------
+
+// function for sorting an array by 'breadcrumb' attribute
+// --- -- -- - - -
+function compare_breadcrumb (a,b) {
+    if ( a.breadcrumb < b.breadcrumb ) { return -1; }
+    if ( a.breadcrumb > b.breadcrumb ) { return 1; }
+    return 0;
+}
+
+// return category record by category-id
+// --- -- -- - - -
+function category_record(id) {
+    var record = 0;
+    categories.forEach(el => { if (el.id == id) record = el; });
+   
+    return record;
+}
+
+// create actions html (edit and delete buttons)
+// --- -- -- - - -
+function create_actions_html(id) {
+
+    var copy, edit;
+
+    edit = [
+        '<button type="button" class="btn btn-xs btn-warning js-edit"',
+            'data-id="'+ id +'">',
+            '<i class="fas fa-pencil-alt"></i>',
+        '</button>'
+    ].join('\n');
+
+    copy = [
+        '<button type="button" class="btn btn-xs btn-dafault js-copy"',
+            'data-id="'+ id +'">',
+            '<i class="far fa-clone"></i>',
+        '</button>'
+    ].join('\n');
+
+    return copy +' '+ edit;
+}
+
+
+
+$(document).ready(function() {
+
+    // When document is ready
+    // -------------------------------------------------------------------------
+
+    /** init_table for 1st time
+     * --- -- -- - - -
+     * get posts + categories
+     * constuct posts + categories array
+     * render dataTable
+     */
+    // function init_table() {
+
+        $.when(     // when loaded posts and categories
+
+            $.getJSON( "/wiki/ajax", { action: "all_posts_props" } ),
+
+            $.getJSON( "/wiki/ajax", { action: "get_categories_array", exclude: '0' } )
+
+        ).done( function( posts_response, categories_response ) {
+
+            // each response is an array of 3 items:
+            // [0] => data (array)
+            // [1] => [success|fail]
+            // [2] => xhr object
+
+            // construct categories data
+            Object.keys(categories_response[0]).forEach( key => {
+                cat = categories_response[0][key];
+                categories.push({
+                    id: cat.rec.id,
+                    breadcrumb: cat.breadcrumb.replaceAll('\t', ' / ')
+                });
+            });
+
+            // construct posts data
+            Object.keys(posts_response[0]).forEach( key => {
+                po = posts_response[0][key];
+                posts.push({
+                    id: po.id,
+                    title: po.title,
+                    category: category_record(po.category_id).breadcrumb,
+                    updated: po.update_date,
+                    status: ((po.status == 1) ? '<i class="fas fa-eye"></i>' : '<i class="fas fa-eye-slash"></i>'),
+                    actions: create_actions_html(po.id)
+                });
+            });
+
+            // (re-)create categories datatable
+            table = $('#dt-posts').DataTable({
+                language: { url: '/libs/DataTables/localization/Greek.json' },
+                data: posts,
+                order: [[2, 'desc']],
+                columns: [
+                    { data: 'title' },
+                    { data: 'category' },
+                    {   // update date
+                        data: 'updated',
+                        render: {
+                            _: function (data, row, full) { return data; },
+                            display: function (data, row, full) { return mini_date(data); }
+                        }
+                    },
+                    { data: 'status' },
+                    { data: 'actions', width: '64px' }
+                ],
+                columnDefs: [{
+                    'targets': [3,4],
+                    'orderable': false
+                }]
+            });
+
+       });
+
+
+    function mini_date(d){
+        let yy = d.substring(2,4);      // year 2digit
+        let mo = d.substring(5,7);      // month
+        let dd = d.substring(8,10);     // dat
+        let h = d.substring(11,13);     // hour
+        let m = d.substring(14,16);     // minute
+        return dd +'/'+ mo +'/'+ yy +' '+ h +':'+ m;
+    }
+
+
+
+    /** When user ckicks button
+     * -------------------------------------------------------------------------
+     */
+
+
+    /** on(click, .edit-btn)
+     * --- -- -- - - -
+     * We need to attach the event handler to some element
+     * higher up in the DOM tree that will remain present;
+     * so the handled attached on #dt-posts
+     * 
+     * get post-id ; load editpost
+    */
+    $('#dt-posts').on('click', 'button.js-edit', function (e) {
+
+        var id = $(this).data('id');
+        window.location.href = '/wiki/admin?action=editpost&id=' + id
+
+    });
+
+
+    $('#dt-posts').on('click', 'button.js-copy', function (e) {
+        var postUrl = pageUrl.origin +'/wiki/post?id=' + $(this).data('id');
+        
+        navigator.clipboard
+        .writeText(postUrl)
+        .then(() => {
+            $(this).addClass('copied');
+            setTimeout( () => { $(this).removeClass('copied'); }, 700);
+        })
+        .catch(() => {
+            console.log("error on coping text");
+        });
+    });
+
+
+});
diff --git a/html/assets/js/manage-tags.js b/html/assets/js/manage-tags.js
new file mode 100644
index 0000000..c287849
--- /dev/null
+++ b/html/assets/js/manage-tags.js
@@ -0,0 +1,163 @@
+// Globals
+// -----------------------------------------------------------------------------
+var tags = [];
+var table;
+
+
+
+// Supplamentary functions
+// -----------------------------------------------------------------------------
+
+
+
+// return category record by category-id
+// --- -- -- - - -
+function category_record(id) {
+    var record = 0;
+    categories.forEach(el => { if (el.id == id) record = el; });
+   
+    return record;
+}
+
+// create actions html (edit and delete buttons)
+// --- -- -- - - -
+function create_actions_html(id) {
+
+    var del, edit;
+
+    del = [
+        '<button type="button" class="btn btn-xs btn-danger"',
+            'data-toggle="modal" data-target="#manageCategory"',
+            'data-id="'+ id +'" disabled>',
+            '<i class="fas fa-times"></i>',
+        '</button>'
+    ].join('\n');
+
+    edit = [
+        '<button type="button" class="btn btn-xs btn-warning"',
+            'data-toggle="modal" data-target="#manageCategory"',
+            'data-id="'+ id +'" disabled>',
+            '<i class="fas fa-pencil-alt"></i>',
+        '</button>'
+    ].join('\n');
+
+    return edit +' '+ del;
+}
+
+
+
+$(document).ready(function() {
+
+    // When document is ready
+    // -------------------------------------------------------------------------
+
+    
+    
+    /** init_table
+     * --- -- -- - - -
+     * get categories
+     * constuct categories array
+     * render dataTable 
+     */
+    function init_table() {
+
+        // get all categories from server (ajax)
+        $.getJSON( "/wiki/ajax", { action: "tags_stats" } )
+        .done(function( json ) {
+            // then ...
+
+            // reset tags
+            tags.length = 0;
+
+            // construct tags data
+            Object.keys(json).forEach( key => {
+                el = json[key];
+                tags.push({
+                    id: parseInt(el.id),
+                    title: el.name,
+                    counter: parseInt(el.totals),
+                    actions: create_actions_html(el.id)
+                });
+            });
+
+            // destroy previous datatable table instances
+            $('#dt-tags').dataTable().fnClearTable();
+            $('#dt-tags').dataTable().fnDestroy();
+
+            // (re-)create categories datatable
+            table = $('#dt-tags').DataTable({
+                language: { url: '/libs/DataTables/localization/Greek.json' },           
+                data: tags,
+                order: [[1, 'desc']],
+                columns: [
+                    { data: 'title' },
+                    { data: 'counter' },
+                    { data: 'actions', width: '64px' }
+                ],
+                columnDefs: [{
+                    'targets': [2],
+                    'orderable': false
+                }]
+            });
+
+        })
+        .fail(function( jqxhr, textStatus, error ) {
+            console.log( "Request Failed (" + error +")" );
+        });
+
+    }
+    init_table();   // init table on first run
+
+
+
+    /** When modal show-up
+     * -------------------------------------------------------------------------
+     * ... prepare the manage-category form 
+     * ... update select2 with possible parents
+     */
+    $('#manageCategory').on('show.bs.modal', event => {
+        var button = $(event.relatedTarget);        // Button that triggered the modal
+        var id = parseInt( button.data('id') );     // category_id from data-id
+        // var modal = $(this);    // modal object     
+        
+        // update modal literature
+        // ---
+        $('#manageCategory .modal-title').html(             // modal title
+            (id) ? 'Ενημέρωση Κατηγορίας' : 'Δημιουργία Κατηγορίας'
+        );
+        $('#manageCategory form input[name=id]').val( id );     // category id (hidden)
+        $('#manageCategory form input[name=title]').val(    // category title
+            (id) ? category_record(id).title : ""
+        );
+        prepare_parents_element(id);        // prepare <select> for parents
+    })
+
+
+    // When form is submited
+    // -------------------------------------------------------------------------
+
+    $('#manageCategory form').submit( event => {
+        event.preventDefault();
+
+        // prepare data to POST
+        var data = {
+            id: parseInt($('#manageCategory form input[name=id]').val()),
+            title: $('#manageCategory form input[name=title]').val(),
+            parent_id: parseInt($('#parent_id').select2('data')[0].id)
+        };
+
+        // select action url (add or update)
+        var request = '/wiki/ajax?action=' + ((data.id == 0)  ? 'add_category' : 'update_category');
+
+        // send POST request
+        $.post(request, data)
+        .done(function( data ) {
+
+            $('#manageCategory').modal('hide');     // when done, close modal
+
+            init_table();       // reload table of categories
+        });       
+
+    });
+
+});
diff --git a/html/assets/js/post-features.js b/html/assets/js/post-features.js
new file mode 100644
index 0000000..ca2928c
--- /dev/null
+++ b/html/assets/js/post-features.js
@@ -0,0 +1,148 @@
+const valid_modals = [      // supported sort-code keys
+    'product',
+    'store'
+];
+
+
+const symbol_escapes = [
+    { esc: '&gt;',    chr: '>' },
+    { esc: '&lt;',    chr: '<' },
+    { esc: '&amp;',   chr: '&' },
+    { esc: '&quot;',  chr: '\"' },
+    { esc: '&apos;',  chr: '\'' },
+    { esc: '&euro;',  chr: '€' },
+    { esc: '&copy;',  chr: '©' },
+    { esc: '&reg;',   chr: '®' }
+];
+
+
+/** inject_codeblocks
+ * --- -- -- - - -
+ * 
+ * NOTE:
+ * a short-code is a mustache block of 3 parametres:
+ * {{ object = someID ; some label description }}
+ * ex. `{{product=1507175; Coca Cola Zero}}`
+ * 
+ * The short-code is parsed to a code-block:
+ * an `a` modal-toggler link with certain data-attributes (+label), ex:
+ * `<a class='modal-toggler view-product' data-id='1507175'>Coca Cola Zero</a>`
+ * 
+ * @param code (string): original content html with short-codes
+ * @returns (string): html content with code-blocks
+ */
+function inject_codeblocks(code) {
+    // isolate all mustache blocks
+    const regexp = /{{(.*?)}}/g;        // regex makes multiple-matching easier
+    const matches = [...code.matchAll(regexp)];
+        // console.log(matches);
+    
+    var output = code;      // use a copy of (source) code
+      
+    matches.forEach( match => {
+      // parse (every) match
+        // NOTE:
+        // match array has 3 items; example:
+        // match[0] : `{{store=247; Pasalimani Market}}`
+        // match[1] : `store=247; Pasalimani Market`
+        // match[3] : the (source) code string
+      let blockparts = unescaped_str( match[1] ).split(';');
+      let main_unit = blockparts[0].replaceAll(' ','').split('=');
+      let target = main_unit[0].toLowerCase();
+      let id = main_unit[1];
+      let label = escaped_str(blockparts[1]);
+      if (valid_modals.includes(target)) {
+        let codeblock = `<a href="#" data-toggle="modal" data-target="#view-${target}" data-id="${id}" class="modal-toggler js-get_${target}">${label}</a>`;
+        output = output.replaceAll(match[0], codeblock);
+      }
+    });
+    
+    return output;
+}
+
+
+// pair of function to escepe/unescape special html symbols
+// --- -- -- - - -
+function unescaped_str(txt) {
+    symbol_escapes.forEach( pair => { txt = txt.replaceAll(pair.esc, pair.chr); })
+    return txt;
+}
+
+function escaped_str(txt) {
+    symbol_escapes.forEach( pair => { txt = txt.replaceAll(pair.chr, pair.esc); })
+    return txt;
+}
+
+
+$(document).ready(function() {
+
+
+    /** translate short-codes to code-blocks
+     * -------------------------------------------------------------------------
+     */ 
+    var content = $('.content .article-body').html();       // get code with shorts
+    $('.content .article-body').html( inject_codeblocks(content) ); // put code with blocks
+    
+
+    
+    /** modal listeners
+     * -------------------------------------------------------------------------
+     */  
+
+    // open store modal listener
+    // --- -- -- - - -
+    $(document).on('click', '.js-get_store', function (e) {
+        e.preventDefault();
+        var id = $(this).data('id');    // id for requesting content via ajax
+
+        $('#dynamic-content').html('');
+        $('#modal-loader').show();
+
+        $.ajax({
+            url: '/libs/modals/modalStore.php',
+            type: 'POST',
+            cache: false,
+            data: 'id=' + id,
+            dataType: 'html'
+        })
+        .done(function (data) {
+            $('#dynamic-content').html('');
+            $('#dynamic-content').html(data);
+            $('#modal-loader').hide();
+        })
+        .fail(function () {
+            $('#dynamic-content').html('<i class="glyphicon glyphicon-info-sign"></i> Υπήρξε κάποιο πρόβλημα, παρακαλώ προσπαθήστε ξανά.');
+            $('#modal-loader').hide();
+        });
+    });
+
+    // open product modal listener
+    // ---
+    $(document).on('click', '.js-get_product', function (e) {
+        e.preventDefault();
+        var id = $(this).data('id');    // id for requesting content via ajax
+
+        $('#dynamic-product').html('');
+        $('#modal-loader').show();
+        
+        $.ajax({
+            url: '/products/ajax/get_product_full',
+            cache: false,
+            type: 'POST',
+            data: { id: id },
+            dataType: 'html'
+        })
+        .done(function (data) {
+            $('#dynamic-product').html('');
+            $('#dynamic-product').html(data);
+            $('#modal-loader').hide();
+
+        })
+        .fail(function () {
+            $('#dynamic-product').html('<i class="glyphicon glyphicon-info-sign"></i> Υπήρξε κάποιο πρόβλημα, παρακαλώ προσπαθήστε ξανά.');
+            $('#modal-loader').hide();
+
+        });
+    });
+
+});
\ No newline at end of file
diff --git a/html/assets/js/sliders/slider.js b/html/assets/js/sliders/slider.js
deleted file mode 100644
index a9f5824..0000000
--- a/html/assets/js/sliders/slider.js
+++ /dev/null
@@ -1,42 +0,0 @@
-// Modules included:

-// 'virtual',

-// 'mousewheel',

-// 'navigation',

-// 'pagination',

-// 'zoom',

-// 'lazy',

-// 'autoplay',

-// 'thumbs',

-// 'manipulation',

-// 'effect-fade',

-

-$$plugins.define('slider', ['swiper-bundle'], function (element, options, Swiper) {

-    if (element.childNodes.length == 0) {

-        return;

-    }

-

-    // init Swiper

-    const swiper = new Swiper(element, {

-        autoHeight: options.autoHeight ? options.autoHeight : false,

-        breakpoints: options.breakpoints,

-        centerInsufficientSlides: options.centerInsufficientSlides ? options.centerInsufficientSlides : false,

-        centeredSlides: options.centeredSlides ? options.centeredSlides : false,

-        direction: options.direction ? options.direction : 'horizontal',

-        effect: options.effect ? options.effect : 'slide',

-        loop: options.loop ? options.loop : false,

-		navigation: {

-			nextEl: element.querySelector('.swiper-button-next'),

-			prevEl: element.querySelector('.swiper-button-prev'),

-		},

-		pagination: {

-			el: element.querySelector('.swiper-pagination'),

-            type: 'bullets',

-            clickable: 'true'

-        },

-        slidesPerGroup: options.slidesPerGroup ? options.slidesPerGroup : 1,

-        slidesPerView: options.slidesPerView ? options.slidesPerView : 1,

-        spaceBetween: options.spaceBetween ? options.spaceBetween : 0,

-		speed: options.speed ? options.speed : 800,

-		watchSlidesProgress: true

-    });

-});

diff --git a/html/assets/js/swiper-bundle.min.js b/html/assets/js/swiper-bundle.min.js
deleted file mode 100644
index 3455e5a..0000000
--- a/html/assets/js/swiper-bundle.min.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**

- * Swiper 7.2.0

- * Most modern mobile touch slider and framework with hardware accelerated transitions

- * https://swiperjs.com

- *

- * Copyright 2014-2021 Vladimir Kharlampidi

- *

- * Released under the MIT License

- *

- * Released on: November 2, 2021

- */

-

-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).Swiper=t()}(this,(function(){"use strict";function e(e){return null!==e&&"object"==typeof e&&"constructor"in e&&e.constructor===Object}function t(s={},i={}){Object.keys(i).forEach((a=>{void 0===s[a]?s[a]=i[a]:e(i[a])&&e(s[a])&&Object.keys(i[a]).length>0&&t(s[a],i[a])}))}const s={body:{},addEventListener(){},removeEventListener(){},activeElement:{blur(){},nodeName:""},querySelector:()=>null,querySelectorAll:()=>[],getElementById:()=>null,createEvent:()=>({initEvent(){}}),createElement:()=>({children:[],childNodes:[],style:{},setAttribute(){},getElementsByTagName:()=>[]}),createElementNS:()=>({}),importNode:()=>null,location:{hash:"",host:"",hostname:"",href:"",origin:"",pathname:"",protocol:"",search:""}};function i(){const e="undefined"!=typeof document?document:{};return t(e,s),e}const 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a.isMoved=!0,void(s.allowClick=!1);if(a.allowTouchCallbacks&&s.emit("touchMove",c),c.targetTouches&&c.targetTouches.length>1)return;r.currentX=h,r.currentY=m;const f=r.currentX-r.startX,g=r.currentY-r.startY;if(s.params.threshold&&Math.sqrt(f**2+g**2)<s.params.threshold)return;if(void 0===a.isScrolling){let e;s.isHorizontal()&&r.currentY===r.startY||s.isVertical()&&r.currentX===r.startX?a.isScrolling=!1:f*f+g*g>=25&&(e=180*Math.atan2(Math.abs(g),Math.abs(f))/Math.PI,a.isScrolling=s.isHorizontal()?e>n.touchAngle:90-e>n.touchAngle)}if(a.isScrolling&&s.emit("touchMoveOpposite",c),void 0===a.startMoving&&(r.currentX===r.startX&&r.currentY===r.startY||(a.startMoving=!0)),a.isScrolling)return void(a.isTouched=!1);if(!a.startMoving)return;s.allowClick=!1,!n.cssMode&&c.cancelable&&c.preventDefault(),n.touchMoveStopPropagation&&!n.nested&&c.stopPropagation(),a.isMoved||(n.loop&&!n.cssMode&&s.loopFix(),a.startTranslate=s.getTranslate(),s.setTransition(0),s.animating&&s.$wrapperEl.trigger("webkitTransitionEnd transitionend"),a.allowMomentumBounce=!1,!n.grabCursor||!0!==s.allowSlideNext&&!0!==s.allowSlidePrev||s.setGrabCursor(!0),s.emit("sliderFirstMove",c)),s.emit("sliderMove",c),a.isMoved=!0;let v=s.isHorizontal()?f:g;r.diff=v,v*=n.touchRatio,l&&(v=-v),s.swipeDirection=v>0?"prev":"next",a.currentTranslate=v+a.startTranslate;let w=!0,b=n.resistanceRatio;if(n.touchReleaseOnEdges&&(b=0),v>0&&a.currentTranslate>s.minTranslate()?(w=!1,n.resistance&&(a.currentTranslate=s.minTranslate()-1+(-s.minTranslate()+a.startTranslate+v)**b)):v<0&&a.currentTranslate<s.maxTranslate()&&(w=!1,n.resistance&&(a.currentTranslate=s.maxTranslate()+1-(s.maxTranslate()-a.startTranslate-v)**b)),w&&(c.preventedByNestedSwiper=!0),!s.allowSlideNext&&"next"===s.swipeDirection&&a.currentTranslate<a.startTranslate&&(a.currentTranslate=a.startTranslate),!s.allowSlidePrev&&"prev"===s.swipeDirection&&a.currentTranslate>a.startTranslate&&(a.currentTranslate=a.startTranslate),s.allowSlidePrev||s.allowSlideNext||(a.currentTranslate=a.startTranslate),n.threshold>0){if(!(Math.abs(v)>n.threshold||a.allowThresholdMove))return void(a.currentTranslate=a.startTranslate);if(!a.allowThresholdMove)return a.allowThresholdMove=!0,r.startX=r.currentX,r.startY=r.currentY,a.currentTranslate=a.startTranslate,void(r.diff=s.isHorizontal()?r.currentX-r.startX:r.currentY-r.startY)}n.followFinger&&!n.cssMode&&((n.freeMode&&n.freeMode.enabled&&s.freeMode||n.watchSlidesProgress)&&(s.updateActiveIndex(),s.updateSlidesClasses()),s.params.freeMode&&n.freeMode.enabled&&s.freeMode&&s.freeMode.onTouchMove(),s.updateProgress(a.currentTranslate),s.setTranslate(a.currentTranslate))}function P(e){const t=this,s=t.touchEventsData,{params:i,touches:a,rtlTranslate:n,slidesGrid:r,enabled:l}=t;if(!l)return;let o=e;if(o.originalEvent&&(o=o.originalEvent),s.allowTouchCallbacks&&t.emit("touchEnd",o),s.allowTouchCallbacks=!1,!s.isTouched)return s.isMoved&&i.grabCursor&&t.setGrabCursor(!1),s.isMoved=!1,void(s.startMoving=!1);i.grabCursor&&s.isMoved&&s.isTouched&&(!0===t.allowSlideNext||!0===t.allowSlidePrev)&&t.setGrabCursor(!1);const d=u(),c=d-s.touchStartTime;if(t.allowClick&&(t.updateClickedSlide(o),t.emit("tap 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t.slideTo(t.activeIndex);"next"===t.swipeDirection&&(g>=i.longSwipesRatio?t.slideTo(m+v):t.slideTo(m)),"prev"===t.swipeDirection&&(g>1-i.longSwipesRatio?t.slideTo(m+v):t.slideTo(m))}else{if(!i.shortSwipes)return void t.slideTo(t.activeIndex);t.navigation&&(o.target===t.navigation.nextEl||o.target===t.navigation.prevEl)?o.target===t.navigation.nextEl?t.slideTo(m+v):t.slideTo(m):("next"===t.swipeDirection&&t.slideTo(m+v),"prev"===t.swipeDirection&&t.slideTo(m))}}function k(){const e=this,{params:t,el:s}=e;if(s&&0===s.offsetWidth)return;t.breakpoints&&e.setBreakpoint();const{allowSlideNext:i,allowSlidePrev:a,snapGrid:n}=e;e.allowSlideNext=!0,e.allowSlidePrev=!0,e.updateSize(),e.updateSlides(),e.updateSlidesClasses(),("auto"===t.slidesPerView||t.slidesPerView>1)&&e.isEnd&&!e.isBeginning&&!e.params.centeredSlides?e.slideTo(e.slides.length-1,0,!1,!0):e.slideTo(e.activeIndex,0,!1,!0),e.autoplay&&e.autoplay.running&&e.autoplay.paused&&e.autoplay.run(),e.allowSlidePrev=a,e.allowSlideNext=i,e.params.watchOverflow&&n!==e.snapGrid&&e.checkOverflow()}function z(e){const t=this;t.enabled&&(t.allowClick||(t.params.preventClicks&&e.preventDefault(),t.params.preventClicksPropagation&&t.animating&&(e.stopPropagation(),e.stopImmediatePropagation())))}function O(){const e=this,{wrapperEl:t,rtlTranslate:s,enabled:i}=e;if(!i)return;let a;e.previousTranslate=e.translate,e.isHorizontal()?e.translate=-t.scrollLeft:e.translate=-t.scrollTop,-0===e.translate&&(e.translate=0),e.updateActiveIndex(),e.updateSlidesClasses();const n=e.maxTranslate()-e.minTranslate();a=0===n?0:(e.translate-e.minTranslate())/n,a!==e.progress&&e.updateProgress(s?-e.translate:e.translate),e.emit("setTranslate",e.translate,!1)}let L=!1;function I(){}const A=(e,t)=>{const s=i(),{params:a,touchEvents:n,el:r,wrapperEl:l,device:o,support:d}=e,c=!!a.nested,p="on"===t?"addEventListener":"removeEventListener",u=t;if(d.touch){const t=!("touchstart"!==n.start||!d.passiveListener||!a.passiveListeners)&&{passive:!0,capture:!1};r[p](n.start,e.onTouchStart,t),r[p](n.move,e.onTouchMove,d.passiveListener?{passive:!1,capture:c}:c),r[p](n.end,e.onTouchEnd,t),n.cancel&&r[p](n.cancel,e.onTouchEnd,t)}else 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0,breakpointsBase:"window",spaceBetween:0,slidesPerView:1,slidesPerGroup:1,slidesPerGroupSkip:0,slidesPerGroupAuto:!1,centeredSlides:!1,centeredSlidesBounds:!1,slidesOffsetBefore:0,slidesOffsetAfter:0,normalizeSlideIndex:!0,centerInsufficientSlides:!1,watchOverflow:!0,roundLengths:!1,touchRatio:1,touchAngle:45,simulateTouch:!0,shortSwipes:!0,longSwipes:!0,longSwipesRatio:.5,longSwipesMs:300,followFinger:!0,allowTouchMove:!0,threshold:0,touchMoveStopPropagation:!1,touchStartPreventDefault:!0,touchStartForcePreventDefault:!1,touchReleaseOnEdges:!1,uniqueNavElements:!0,resistance:!0,resistanceRatio:.85,watchSlidesProgress:!1,grabCursor:!1,preventClicks:!0,preventClicksPropagation:!0,slideToClickedSlide:!1,preloadImages:!0,updateOnImagesReady:!0,loop:!1,loopAdditionalSlides:0,loopedSlides:null,loopFillGroupWithBlank:!1,loopPreventsSlide:!0,allowSlidePrev:!0,allowSlideNext:!0,swipeHandler:null,noSwiping:!0,noSwipingClass:"swiper-no-swiping",noSwipingSelector:null,passiveListeners:!0,containerModifierClass:"swiper-",slideClass:"swiper-slide",slideBlankClass:"swiper-slide-invisible-blank",slideActiveClass:"swiper-slide-active",slideDuplicateActiveClass:"swiper-slide-duplicate-active",slideVisibleClass:"swiper-slide-visible",slideDuplicateClass:"swiper-slide-duplicate",slideNextClass:"swiper-slide-next",slideDuplicateNextClass:"swiper-slide-duplicate-next",slidePrevClass:"swiper-slide-prev",slideDuplicatePrevClass:"swiper-slide-duplicate-prev",wrapperClass:"swiper-wrapper",runCallbacksOnInit:!0,_emitClasses:!1};function X(e,t){return function(s={}){const i=Object.keys(s)[0],a=s[i];"object"==typeof a&&null!==a?(["navigation","pagination","scrollbar"].indexOf(i)>=0&&!0===e[i]&&(e[i]={auto:!0}),i in e&&"enabled"in a?(!0===e[i]&&(e[i]={enabled:!0}),"object"!=typeof e[i]||"enabled"in e[i]||(e[i].enabled=!0),e[i]||(e[i]={enabled:!1}),f(t,s)):f(t,s)):f(t,s)}}const Y={eventsEmitter:y,update:{updateSize:function(){const e=this;let t,s;const i=e.$el;t=void 0!==e.params.width&&null!==e.params.width?e.params.width:i[0].clientWidth,s=void 0!==e.params.height&&null!==e.params.height?e.params.height:i[0].clientHeight,0===t&&e.isHorizontal()||0===s&&e.isVertical()||(t=t-parseInt(i.css("padding-left")||0,10)-parseInt(i.css("padding-right")||0,10),s=s-parseInt(i.css("padding-top")||0,10)-parseInt(i.css("padding-bottom")||0,10),Number.isNaN(t)&&(t=0),Number.isNaN(s)&&(s=0),Object.assign(e,{width:t,height:s,size:e.isHorizontal()?t:s}))},updateSlides:function(){const e=this;function t(t){return e.isHorizontal()?t:{width:"height","margin-top":"margin-left","margin-bottom ":"margin-right","margin-left":"margin-top","margin-right":"margin-bottom","padding-left":"padding-top","padding-right":"padding-bottom",marginRight:"marginBottom"}[t]}function s(e,s){return parseFloat(e.getPropertyValue(t(s))||0)}const i=e.params,{$wrapperEl:a,size:n,rtlTranslate:r,wrongRTL:l}=e,o=e.virtual&&i.virtual.enabled,d=o?e.virtual.slides.length:e.slides.length,c=a.children(`.${e.params.slideClass}`),p=o?e.virtual.slides.length:c.length;let u=[];const h=[],m=[];let f=i.slidesOffsetBefore;"function"==typeof f&&(f=i.slidesOffsetBefore.call(e));let v=i.slidesOffsetAfter;"function"==typeof v&&(v=i.slidesOffsetAfter.call(e));const w=e.snapGrid.length,b=e.slidesGrid.length;let E=i.spaceBetween,C=-f,x=0,T=0;if(void 0===n)return;"string"==typeof E&&E.indexOf("%")>=0&&(E=parseFloat(E.replace("%",""))/100*n),e.virtualSize=-E,r?c.css({marginLeft:"",marginBottom:"",marginTop:""}):c.css({marginRight:"",marginBottom:"",marginTop:""}),i.centeredSlides&&i.cssMode&&(g(e.wrapperEl,"--swiper-centered-offset-before",""),g(e.wrapperEl,"--swiper-centered-offset-after",""));const y=i.grid&&i.grid.rows>1&&e.grid;let S;y&&e.grid.initSlides(p);const $="auto"===i.slidesPerView&&i.breakpoints&&Object.keys(i.breakpoints).filter((e=>void 0!==i.breakpoints[e].slidesPerView)).length>0;for(let a=0;a<p;a+=1){S=0;const r=c.eq(a);if(y&&e.grid.updateSlide(a,r,p,t),"none"!==r.css("display")){if("auto"===i.slidesPerView){$&&(c[a].style[t("width")]="");const n=getComputedStyle(r[0]),l=r[0].style.transform,o=r[0].style.webkitTransform;if(l&&(r[0].style.transform="none"),o&&(r[0].style.webkitTransform="none"),i.roundLengths)S=e.isHorizontal()?r.outerWidth(!0):r.outerHeight(!0);else{const e=s(n,"width"),t=s(n,"padding-left"),i=s(n,"padding-right"),a=s(n,"margin-left"),l=s(n,"margin-right"),o=n.getPropertyValue("box-sizing");if(o&&"border-box"===o)S=e+a+l;else{const{clientWidth:s,offsetWidth:n}=r[0];S=e+t+i+a+l+(n-s)}}l&&(r[0].style.transform=l),o&&(r[0].style.webkitTransform=o),i.roundLengths&&(S=Math.floor(S))}else S=(n-(i.slidesPerView-1)*E)/i.slidesPerView,i.roundLengths&&(S=Math.floor(S)),c[a]&&(c[a].style[t("width")]=`${S}px`);c[a]&&(c[a].swiperSlideSize=S),m.push(S),i.centeredSlides?(C=C+S/2+x/2+E,0===x&&0!==a&&(C=C-n/2-E),0===a&&(C=C-n/2-E),Math.abs(C)<.001&&(C=0),i.roundLengths&&(C=Math.floor(C)),T%i.slidesPerGroup==0&&u.push(C),h.push(C)):(i.roundLengths&&(C=Math.floor(C)),(T-Math.min(e.params.slidesPerGroupSkip,T))%e.params.slidesPerGroup==0&&u.push(C),h.push(C),C=C+S+E),e.virtualSize+=S+E,x=S,T+=1}}if(e.virtualSize=Math.max(e.virtualSize,n)+v,r&&l&&("slide"===i.effect||"coverflow"===i.effect)&&a.css({width:`${e.virtualSize+i.spaceBetween}px`}),i.setWrapperSize&&a.css({[t("width")]:`${e.virtualSize+i.spaceBetween}px`}),y&&e.grid.updateWrapperSize(S,u,t),!i.centeredSlides){const t=[];for(let s=0;s<u.length;s+=1){let a=u[s];i.roundLengths&&(a=Math.floor(a)),u[s]<=e.virtualSize-n&&t.push(a)}u=t,Math.floor(e.virtualSize-n)-Math.floor(u[u.length-1])>1&&u.push(e.virtualSize-n)}if(0===u.length&&(u=[0]),0!==i.spaceBetween){const s=e.isHorizontal()&&r?"marginLeft":t("marginRight");c.filter(((e,t)=>!i.cssMode||t!==c.length-1)).css({[s]:`${E}px`})}if(i.centeredSlides&&i.centeredSlidesBounds){let e=0;m.forEach((t=>{e+=t+(i.spaceBetween?i.spaceBetween:0)})),e-=i.spaceBetween;const t=e-n;u=u.map((e=>e<0?-f:e>t?t+v:e))}if(i.centerInsufficientSlides){let e=0;if(m.forEach((t=>{e+=t+(i.spaceBetween?i.spaceBetween:0)})),e-=i.spaceBetween,e<n){const t=(n-e)/2;u.forEach(((e,s)=>{u[s]=e-t})),h.forEach(((e,s)=>{h[s]=e+t}))}}if(Object.assign(e,{slides:c,snapGrid:u,slidesGrid:h,slidesSizesGrid:m}),i.centeredSlides&&i.cssMode&&!i.centeredSlidesBounds){g(e.wrapperEl,"--swiper-centered-offset-before",-u[0]+"px"),g(e.wrapperEl,"--swiper-centered-offset-after",e.size/2-m[m.length-1]/2+"px");const t=-e.snapGrid[0],s=-e.slidesGrid[0];e.snapGrid=e.snapGrid.map((e=>e+t)),e.slidesGrid=e.slidesGrid.map((e=>e+s))}p!==d&&e.emit("slidesLengthChange"),u.length!==w&&(e.params.watchOverflow&&e.checkOverflow(),e.emit("snapGridLengthChange")),h.length!==b&&e.emit("slidesGridLengthChange"),i.watchSlidesProgress&&e.updateSlidesOffset()},updateAutoHeight:function(e){const t=this,s=[],i=t.virtual&&t.params.virtual.enabled;let a,n=0;"number"==typeof e?t.setTransition(e):!0===e&&t.setTransition(t.params.speed);const r=e=>i?t.slides.filter((t=>parseInt(t.getAttribute("data-swiper-slide-index"),10)===e))[0]:t.slides.eq(e)[0];if("auto"!==t.params.slidesPerView&&t.params.slidesPerView>1)if(t.params.centeredSlides)t.visibleSlides.each((e=>{s.push(e)}));else for(a=0;a<Math.ceil(t.params.slidesPerView);a+=1){const e=t.activeIndex+a;if(e>t.slides.length&&!i)break;s.push(r(e))}else s.push(r(t.activeIndex));for(a=0;a<s.length;a+=1)if(void 0!==s[a]){const e=s[a].offsetHeight;n=e>n?e:n}n&&t.$wrapperEl.css("height",`${n}px`)},updateSlidesOffset:function(){const e=this,t=e.slides;for(let s=0;s<t.length;s+=1)t[s].swiperSlideOffset=e.isHorizontal()?t[s].offsetLeft:t[s].offsetTop},updateSlidesProgress:function(e=this&&this.translate||0){const t=this,s=t.params,{slides:i,rtlTranslate:a,snapGrid:n}=t;if(0===i.length)return;void 0===i[0].swiperSlideOffset&&t.updateSlidesOffset();let r=-e;a&&(r=e),i.removeClass(s.slideVisibleClass),t.visibleSlidesIndexes=[],t.visibleSlides=[];for(let e=0;e<i.length;e+=1){const l=i[e];let o=l.swiperSlideOffset;s.cssMode&&s.centeredSlides&&(o-=i[0].swiperSlideOffset);const 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a=-t[0].swiperSlideOffset;e.params.virtualTranslate||(a-=e.translate);let n=0;e.isHorizontal()||(n=a,a=0);const r=e.params.fadeEffect.crossFade?Math.max(1-Math.abs(t[0].progress),0):1+Math.min(Math.max(t[0].progress,-1),0);R(s,t).css({opacity:r}).transform(`translate3d(${a}px, ${n}px, 0px)`)}},setTransition:t=>{const{transformEl:s}=e.params.fadeEffect;(s?e.slides.find(s):e.slides).transition(t),function({swiper:e,duration:t,transformEl:s,allSlides:i}){const{slides:a,activeIndex:n,$wrapperEl:r}=e;if(e.params.virtualTranslate&&0!==t){let t,l=!1;t=i?s?a.find(s):a:s?a.eq(n).find(s):a.eq(n),t.transitionEnd((()=>{if(l)return;if(!e||e.destroyed)return;l=!0,e.animating=!1;const t=["webkitTransitionEnd","transitionend"];for(let e=0;e<t.length;e+=1)r.trigger(t[e])}))}}({swiper:e,duration:t,transformEl:s,allSlides:!0})},overwriteParams:()=>({slidesPerView:1,slidesPerGroup:1,watchSlidesProgress:!0,spaceBetween:0,virtualTranslate:!e.params.cssMode})})}];return B.use(U),B}));

-//# sourceMappingURL=swiper-bundle.min.js.map
\ No newline at end of file
diff --git a/html/assets/js/wNumb.min.js b/html/assets/js/wNumb.min.js
deleted file mode 100644
index bb8f177..0000000
--- a/html/assets/js/wNumb.min.js
+++ /dev/null
@@ -1 +0,0 @@
-!function(e){"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?module.exports=e():window.wNumb=e()}(function(){"use strict";var o=["decimals","thousand","mark","prefix","suffix","encoder","decoder","negativeBefore","negative","edit","undo"];function w(e){return e.split("").reverse().join("")}function h(e,t){return e.substring(0,t.length)===t}function f(e,t,n){if((e[t]||e[n])&&e[t]===e[n])throw new Error(t)}function x(e){return"number"==typeof e&&isFinite(e)}function n(e,t,n,r,i,o,f,u,s,c,a,p){var d,l,h,g=p,v="",m="";return o&&(p=o(p)),!!x(p)&&(!1!==e&&0===parseFloat(p.toFixed(e))&&(p=0),p<0&&(d=!0,p=Math.abs(p)),!1!==e&&(p=function(e,t){return e=e.toString().split("e"),(+((e=(e=Math.round(+(e[0]+"e"+(e[1]?+e[1]+t:t)))).toString().split("e"))[0]+"e"+(e[1]?e[1]-t:-t))).toFixed(t)}(p,e)),-1!==(p=p.toString()).indexOf(".")?(h=(l=p.split("."))[0],n&&(v=n+l[1])):h=p,t&&(h=w((h=w(h).match(/.{1,3}/g)).join(w(t)))),d&&u&&(m+=u),r&&(m+=r),d&&s&&(m+=s),m+=h,m+=v,i&&(m+=i),c&&(m=c(m,g)),m)}function r(e,t,n,r,i,o,f,u,s,c,a,p){var d,l="";return a&&(p=a(p)),!(!p||"string"!=typeof p)&&(u&&h(p,u)&&(p=p.replace(u,""),d=!0),r&&h(p,r)&&(p=p.replace(r,"")),s&&h(p,s)&&(p=p.replace(s,""),d=!0),i&&function(e,t){return e.slice(-1*t.length)===t}(p,i)&&(p=p.slice(0,-1*i.length)),t&&(p=p.split(t).join("")),n&&(p=p.replace(n,".")),d&&(l+="-"),""!==(l=(l+=p).replace(/[^0-9\.\-.]/g,""))&&(l=Number(l),f&&(l=f(l)),!!x(l)&&l))}function i(e,t,n){var r,i=[];for(r=0;r<o.length;r+=1)i.push(e[o[r]]);return i.push(n),t.apply("",i)}return function e(t){if(!(this instanceof e))return new e(t);"object"==typeof t&&(t=function(e){var t,n,r,i={};for(void 0===e.suffix&&(e.suffix=e.postfix),t=0;t<o.length;t+=1)if(void 0===(r=e[n=o[t]]))"negative"!==n||i.negativeBefore?"mark"===n&&"."!==i.thousand?i[n]=".":i[n]=!1:i[n]="-";else if("decimals"===n){if(!(0<=r&&r<8))throw new Error(n);i[n]=r}else if("encoder"===n||"decoder"===n||"edit"===n||"undo"===n){if("function"!=typeof r)throw new Error(n);i[n]=r}else{if("string"!=typeof r)throw new Error(n);i[n]=r}return f(i,"mark","thousand"),f(i,"prefix","negative"),f(i,"prefix","negativeBefore"),i}(t),this.to=function(e){return i(t,n,e)},this.from=function(e){return i(t,r,e)})}});
\ No newline at end of file
diff --git a/html/assets/js/wiki.js b/html/assets/js/wiki.js
new file mode 100644
index 0000000..b1947f8
--- /dev/null
+++ b/html/assets/js/wiki.js
@@ -0,0 +1,27 @@
+$(document).ready(function() {
+
+
+    /** Categories Menu Toggler
+     * -------------------------------------------------------------------------
+     */
+    $('.toggler').click(function(e) {
+        e.preventDefault();
+
+        // inner div (contains children of this category)
+        var inner = $(this).parent().parent().find("ul.inner").first();
+
+        // toggle 'show' class on/off
+        if (inner.hasClass('show')) {
+            inner.removeClass('show');
+            inner.slideUp(350);
+            $(this).html("+");
+        } else {
+            inner.addClass('show');
+            inner.slideDown(350);
+            $(this).html("–");
+        }
+    });
+
+
+
+});