Avatar refactoring
Fix for avatar
Merge branch 'user' of https://github.com/pi-engine/pi into user
Typo fix
Fix for avatar
Fix for privacy
Merge pull request #400 from liuchuangww/user

Fix for privacy
Hide not used avatar sources
Merge branch 'user' of https://github.com/pi-engine/pi into user
Code cleaning up
Refactored privacy
Merge pull request #401 from liuchuangww/user

Refactored privacy
Improved user persist data with TTL
Refactored authentication/login service with persistent data
Permission fix
Improved admin login
Added cookie service and moved page jump data from session to cookie
Added terminate plugin for controller
Added permission against module list
Finalized permissions