N°2847 * Update CKeditor to 4.15.1

* Add iTop default languages to ckeditor
* Change CKeditor skin from flat to Moono-Lisa

js/ckeditor/plugins/pastetools/filter/image.js

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+/*
+ Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
+ For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
+*/
+(function(){function f(b){var c=[],a=/(\{\\pict[^{}]+?|\{\\\*\\shppict\{\\pict\{\\\*[^*]+?)\\(?:jpeg|png)blip/,d;b=b.match(new RegExp("(?:("+a.source+"))([\\da-fA-F\\s]+)\\}","g"));if(!b)return c;for(var e=0;e<b.length;e++)if(a.test(b[e])){if(-1!==b[e].indexOf("\\pngblip"))d="image/png";else if(-1!==b[e].indexOf("\\jpegblip"))d="image/jpeg";else continue;c.push({hex:d?b[e].replace(a,"").replace(/[^\da-fA-F]/g,""):null,type:d})}return c}function g(b){for(var c=/<img[^>]+src="([^"]+)[^>]+/g,a=[],d;d=
+c.exec(b);)a.push(d[1]);return a}CKEDITOR.pasteFilters.image=function(b,c,a){var d=[];if(!a)return b;c=g(b);if(0===c.length)return b;a=f(a);if(0===a.length)return b;CKEDITOR.tools.array.forEach(a,function(a){d.push(a.type?"data:"+a.type+";base64,"+CKEDITOR.tools.convertBytesToBase64(CKEDITOR.tools.convertHexStringToBytes(a.hex)):null)},this);if(c.length===d.length)for(a=0;a<c.length;a++)0===c[a].indexOf("file://")&&d[a]&&(b=b.replace(c[a],d[a]));return b}})();

js/ckeditor/skins/moono-lisa/readme.md

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+"Moono-lisa" Skin
+=================
+
+This skin has been made a **default skin** starting from CKEditor 4.6.0 and is maintained by the core developers.
+
+For more information about skins, please check the [CKEditor Skin SDK](https://ckeditor.com/docs/ckeditor4/latest/guide/skin_sdk_intro.html)
+documentation.
+
+Features
+-------------------
+"Moono-lisa" is a monochromatic skin, which offers a modern, flat and minimalistic look which blends very well in modern design.
+It comes with the following features:
+
+- Chameleon feature with brightness.
+- High-contrast compatibility.
+- Graphics source provided in SVG.
+
+Directory Structure
+-------------------
+
+CSS parts:
+- **editor.css**: the main CSS file. It's simply loading several other files, for easier maintenance,
+- **mainui.css**: the file contains styles of entire editor outline structures,
+- **toolbar.css**: the file contains styles of the editor toolbar space (top),
+- **richcombo.css**: the file contains styles of the rich combo ui elements on toolbar,
+- **panel.css**: the file contains styles of the rich combo drop-down, it's not loaded
+until the first panel open up,
+- **elementspath.css**: the file contains styles of the editor elements path bar (bottom),
+- **menu.css**: the file contains styles of all editor menus including context menu and button drop-down,
+it's not loaded until the first menu open up,
+- **dialog.css**: the CSS files for the dialog UI, it's not loaded until the first dialog open,
+- **reset.css**: the file defines the basis of style resets among all editor UI spaces,
+- **preset.css**: the file defines the default styles of some UI elements reflecting the skin preference,
+- **editor_XYZ.css** and **dialog_XYZ.css**: browser specific CSS hacks.
+
+Other parts:
+- **skin.js**: the only JavaScript part of the skin that registers the skin, its browser specific files and its icons and defines the Chameleon feature,
+- **images/**: contains a fill general used images,
+- **dev/**: contains SVG and PNG source of the skin icons.
+
+License
+-------
+
+Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
+
+For licensing, see LICENSE.md or [https://ckeditor.com/legal/ckeditor-oss-license](https://ckeditor.com/legal/ckeditor-oss-license)