Merge pull request #510 from adivspan/user-adivspan

 Fixed three front template page of user module
Refactored user resources, moved to adapter
Merge branch 'user' of https://github.com/pi-engine/pi into user
Updated uclient module config
Fix user list and form required validators
Added protection against sensitive fields
Merge remote-tracking branch 'upstream/user' into user
Fix register form
Merge pull request #512 from liuchuangww/user

Fix user list, register, form required validators
EEFOCUS linkage select
Merge pull request #513 from sexnothing/user

EEFOCUS linkage select
Fix for namespace
Added remote avatar support
Add some profile fields for custom
Merge pull request #514 from liuchuangww/user

Add some profile fields for custom
EEFOCUS linkage select
Merge pull request #515 from sexnothing/user

EEFOCUS linkage select
Added remote avatar API
Fix for user meta fetch
Add class for custom field