Added uid check for user APIs
Refactored user build methods
Fix clear deleted user
Merge pull request #378 from liuchuangww/user

Fix clear deleted user
Fixed typos
Added missing parameter `limit` to paginator
Added missing ng-click to permission admin
Added support for any content-type in remote service
Fix timeline and acticity
Merge pull request #379 from liuchuangww/user

Fix timeline and acticity
Separate admin login from front login
Complete user privacy and fix build data
Merge pull request #380 from liuchuangww/user

Complete user privacy and fix build data
Separate admin login from front login
Merge branch 'user' of https://github.com/pi-engine/pi into user
Merge pull request #381 from sexnothing/user

User upload avater
User maintance page in admin