MDL-37565 - HTMLEditor - Adding a toggle plugin to TinyMCE to improve the appearance of the editor
MDL-23646 tinymce: Add plugin to wrap toolbar on small screens
MDL-23646 tinymce: Add upgrade algorithm for custom toolbars.
MDL-23646 tinymce: Fix for pdw plugin

This plugin was changing the display of the toolbar tables from "display: table"
to "display: block" when hiding/unhiding the toolbars.

This broke the wrapping plugin.
MDL-23646: Tinymce wrap plugin fixes.

Added info to upgrade.txt
Removed wrap plugins from the tinymce plugin list.
Fix trailing comma in wrap plugin javascript.
Removed non functioning "!" handling.
Fixed icons for wrap plugin.