Completed privacy setting
Merge pull request #440 from liuchuangww/user

Completed privacy setting
Merge branch 'user' of https://github.com/pi-engine/pi into user
Fix for uclient data access
Fix register and password
Merge pull request #441 from liuchuangww/user

Fix register and password
User webservice APIs
Set `credential` to is_display false
Fix edit user
User webservice APIs
Merge pull request #442 from liuchuangww/user

Fix edit user
Added field `uid`, `name`, `identity`, `email` for role assignment
User role and user edit done
Merge pull request #443 from sexnothing/user

User role and user edit done
Added role assignment messages
Fixed for user APIs
Fix some bug
Merge pull request #444 from liuchuangww/user

Fix some bug
Ng-if will create new scope, so it make a bug, so we can use ng-show
replace it
Merge pull request #445 from sexnothing/user

Ng-if will create new scope, so it make a bug, so we can use ng-show