[Anno App] Added label separator for 'teams' & 'apps' in app picklist
[Anno App] Setting type based on user selected an app or a community
[GAE Server] Added feature to create anno by directly selecting community
[Anno App] Setting type based on user selected an app or a community while editing an anno
[GAE Server] Updating app and community of anno while editing it
Merge branch 'feature/community-demarcation' into develop