DNN-6197 Modified the CKEditor and RadEditor manifests to include new settingControlPath attribute.

(cherry picked from commit b8db3218aa526d0ce67a7f5d7eeddf8e45d86483)

Conflicts:
	DNN Platform/Providers/HtmlEditorProviders/dnnckeditor/WatchersNET.CKHtmlEditorProvider.dnn
DNN-6197 More UI standardization of settings control

Updated CKEditor to version 4.4.6
Added icy-orange and bootstrap skins

(cherry picked from commit de26976528fb54c5429c97ae08d80c29fcd445cb)

Conflicts:
	DNN Platform/Providers/HtmlEditorProviders/dnnckeditor/CKEditorOptions.ascx.cs