Update CKEditor to version 4.4.6 (+ sourcearea)

Added an enabled the 'Source Area' plugin to be able to edit the HTML
code directly.

UI/WebServerResources/ckeditor/build-config.js

@@ -13,10 +13,10 @@
  * (1) http://ckeditor.com/builder
  *     Visit online builder to build CKEditor from scratch.
  *
- * (2) http://ckeditor.com/builder/7df2f18471fb3861d98e6e0960792954
+ * (2) http://ckeditor.com/builder/8d9963445afb13b7ca6d38682bd8abeb
  *     Visit online builder to build CKEditor, starting with the same setup as before.
  *
- * (3) http://ckeditor.com/builder/download/7df2f18471fb3861d98e6e0960792954
+ * (3) http://ckeditor.com/builder/download/8d9963445afb13b7ca6d38682bd8abeb
  *     Straight download link to the latest version of CKEditor (Optimized) with the same setup as before.
  *
  * NOTE:
@@ -36,7 +36,7 @@ var CKBUILDER_CONFIG = {
 		'.DS_Store',
 		'.gitattributes',
 		'.gitignore',
-		'Gruntfile.js',
+		'gruntfile.js',
 		'.idea',
 		'.jscsrc',
 		'.jshintignore',
@@ -79,6 +79,7 @@ var CKBUILDER_CONFIG = {
 		'pastetext' : 1,
 		'richcombo' : 1,
 		'scayt' : 1,
+		'sourcearea' : 1,
 		'tab' : 1,
 		'table' : 1,
 		'tableresize' : 1,