Merge pull request #468 from liuchuangww/user

Add home link for user list
Code clean up
Merge pull request #469 from linzongshu/user

Code clean up
update doc for permission
User bug handler
Fix for uclient use list
Merge branch 'user' of https://github.com/pi-engine/pi into user
Clean up article code to fit with framework
Initilized category permission when install
Merge pull request #470 from sexnothing/user

User bug handler
Merge pull request #471 from linzongshu/user

Clean up article code to fit with framework
Fix edit account error status