IDE now supports animations; bugfixes

Switched from using cookies to using POSTs when saving content versions

Fixed bug that caused hyperlinks to point to the IDE by default

Fixed bug that caused hyperlinks to be opened on click while in the IDE

Fixed bug that prevented dropdown menus from being dragged in the IDE

The IDE now supports adding buttons

kPanel is now preventing the user from viewing content versions while
they aren't compiled

Added the ability to compile galleries

Version renaming is now done with a prompt instead of hackish live text
editing

Added basic animations to the IDE