Early stages of tabs functionality and bug fixes
Create a new tab after creating a new guide
Remove all pluslet_subject code to replace with pluslet_tab
Make pluslets draggable between tabs and fix sortable pluslets
Perfect dragging pluslets between tabs, change how to drag pluslets by icon, and fix bug when trying to save layout
Add new icon to drag pluslets by
Change ckeditor config to use PasteFromWord instead of PasteWord