[GAE Server] Added UserAnnoStateApi in services
[GAE Server] Merged changes made by Leo in pull request
Merge branch 'develop' of github.com:usersource/anno into feature/usb
Merge branch 'develop' of github.com:usersource/anno into feature/push-notifications
Merge branch 'feature/usb' of github.com:usersource/anno into feature/push-notifications