Merge branch 'master' into feature_etherpad
Etherpad: last changed and html view
Etherpad: fix shown times
Merge remote-tracking branch 'origin/master' into feature_etherpad
Etherpad: better formating for Dates
etherpad: delete prints, change german comment
etherpad: update locale
etherpad: fix typo in function name delete_group
Etherpad: fix typo locale en_US
Etherpad: fix typo locale de_DE
Etherpad: add missing encode on api calls to Etherpad
Etherpad: add django.contrib.humanize to INSTALLED_APPS in example config
groups: Display open invitations in the header
base: Change important-badge color
dashboard: Add default argument to all BooleanFields
base: Add fields attribute to MafiasiChangeForm
Delete unused test.py files