Update angular to 1.2.23
Merge pull request #98 from theurere/update-angular

Update angular to 1.2.23
Updated translation and translated German.
Base controller is now injected with a directive.
Do not use two primary buttons next to each other.
Moved user settings storage to own service.
Implemented per user encryption for locally stored user data.
Simplified function definition.
Added filter to avoid empty displayNames in additional sesions list.
Avoid to send status data twice on connect.
Removed debug.
Removed debug and cleaned up.
Updated display.
Removed debug.