N°2847 * Update CKeditor to 4.15.1

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

js/ckeditor/samples/old/assets/uilanguages/languages.js

@@ -1,20 +1,7 @@
 /*
- * Copyright (C) 2013-2019 Combodo SARL
- *
- * This file is part of iTop.
- *
- * iTop is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * iTop is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- */
+ Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
+ For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
+*/
 var CKEDITOR_LANGS=function(){var c={af:"Afrikaans",ar:"Arabic",az:"Azerbaijani",bg:"Bulgarian",bn:"Bengali/Bangla",bs:"Bosnian",ca:"Catalan",cs:"Czech",cy:"Welsh",da:"Danish",de:"German","de-ch":"German (Switzerland)",el:"Greek",en:"English","en-au":"English (Australia)","en-ca":"English (Canadian)","en-gb":"English (United Kingdom)",eo:"Esperanto",es:"Spanish","es-mx":"Spanish (Mexico)",et:"Estonian",eu:"Basque",fa:"Persian",fi:"Finnish",fo:"Faroese",fr:"French","fr-ca":"French (Canada)",gl:"Galician",
 gu:"Gujarati",he:"Hebrew",hi:"Hindi",hr:"Croatian",hu:"Hungarian",id:"Indonesian",is:"Icelandic",it:"Italian",ja:"Japanese",ka:"Georgian",km:"Khmer",ko:"Korean",ku:"Kurdish",lt:"Lithuanian",lv:"Latvian",mk:"Macedonian",mn:"Mongolian",ms:"Malay",nb:"Norwegian Bokmal",nl:"Dutch",no:"Norwegian",oc:"Occitan",pl:"Polish",pt:"Portuguese (Portugal)","pt-br":"Portuguese (Brazil)",ro:"Romanian",ru:"Russian",si:"Sinhala",sk:"Slovak",sq:"Albanian",sl:"Slovenian",sr:"Serbian (Cyrillic)","sr-latn":"Serbian (Latin)",
 sv:"Swedish",th:"Thai",tr:"Turkish",tt:"Tatar",ug:"Uighur",uk:"Ukrainian",vi:"Vietnamese",zh:"Chinese Traditional","zh-cn":"Chinese Simplified"},b=[],a;for(a in CKEDITOR.lang.languages)b.push({code:a,name:c[a]||a});b.sort(function(a,b){return a.name<b.name?-1:1});return b}();