add debug toolbar to dependencies
Users can now upload avatars
display avatar in navbar
display some information about the user on profilepage
hide navbar elements when getting narrower
Add all models to revision tracking
use ugettext instead of ugettext_lazy to fix a bug
Display all revisions in globalhistory. not just devices
optimize dashboard widget loading
only display links to revision when it's a device
Add sorting to all listviews. Fixes #68
don't accept url variables with /
Added filter for listviews. Fixes #67
set revision comment when lending. Fixes #56