Uclient fix
Merge pull request #457 from liuchuangww/user

Typo fix
Uclient fix
Merge branch 'user' of https://github.com/pi-engine/pi into user
Uclient fix
Added message for empty user
Fix for role assignment
User list in uclient module
Fix timle line and some bug
Merge pull request #459 from sexnothing/user

User list in uclient module
Merge remote-tracking branch 'upstream/user' into user