fix saml
Merge pull request #588 from wmquan/user

fix saml
Merge pull request #591 from sexnothing/user

Delete user bug
Add password validator
Merge pull request #592 from liuchuangww/user

Add password validator
Fixed user icon
Merge pull request #593 from adivspan/user-adivspan

Fixed user icon
Fix for getUserModel
Merge pull request #594 from sexnothing/user

User module bug fixed
Added private message link
Fixed ie css bug and icon html
Merge pull request #596 from adivspan/user-adivspan

Fixed ie css bug and icon html
Activity page bug fixed