adds coveralls.io coverage integration with travis-ci.org
reduces queries with deep plugin trees
Add page reload after editing model from frontend
Change documentation for Frontend editing for Django models
Move psycopg2 from requirements to travis. Remove use-mirrors argument in travis.
Fixing #1649 - NoReverseMatch raised if apphook doesn't exist

Some apps, like cmsplugin-zinnia and cmsplugin_news will raise NoReverseMatch when trying to generate their menus before an apphook is installed. In sampleapp this is solved by adding a try-except like the one in this commit. Placing the try-except in django-cms instead of inside every app would simplify the process of writing plugins and avoid some confusing 500-errors for new users trying to install plugins.
Add messages when apphook raises exception in menu
Limits messages to staff users only
Reword the error message and log the error.
That was a stupid error
Fix formatting error in MFE template
Merge pull request #2336 from yakky/feature/fix_mfe_space

Fix formatting error in MFE template
modal popup: jquery hide function breaks ckeditor on firefox
move tooltip to helpers
make jquery expr faster
prevent global variable
comment adjustments
separates modal javascript and introduces CMS.settings
change api names
use config instead of settings