CNS-663: Implement CKEditor WYSIWYG

Removed coffeescript file for a dialog related to Redactor
CNS-663: Implement CKEditor WYSIWYG

Added CKEditor optimized plugin files
CNS-663: Implement CKEditor WYSIWYG

Added ckeditor.editor_box.js interface and removed links to TinyMCE code
CNS-663: Implement CKEditor WYSIWYG

Replaced references to tinymce.editor_box.js with ckeditor.editor_box.js
CNS-663: Implement CKEditor WYSIWYG

Removed usages of TinyMCE stylesheets