adds firefox fixes
disallow plugins within disabled items
fixes an issue with undo
jslint fix
add a small style fix using js
fix line height and arrow issues on firefox
fixes for safari
move minimized version a bit closer
fixes issue #2754 and #2742
Merge branch 'develop' of github.com:divio/django-cms into develop
fix an issue with modal showing changelist on save
docs for #2643
Merge pull request #2749 from FinalAngel/develop

Crossbrowser fixes