Merge pull request #681 from liuchuangww/user

Clear notice
Suppress notice messages
Merge branch 'user' of https://github.com/pi-engine/pi into user
Restored regular angular i18n files
Comment ajax cache bug
Merge pull request #682 from sexnothing/user

Comment ajax cache bug
Restored regular angular i18n files
Changed callback for user authentication status check
Fix proxy ip bug