[WIP] Facebook session
Added Facebook Login
Migrates launch image.
Calculating user now
Implements current user
Merge branch 'feature-fbsession'

* feature-fbsession:
  Implements current user
  Calculating user now
  Migrates launch image.
  Added Facebook Login
  [WIP] Facebook session

Conflicts:
	TeamMates.xcodeproj/project.pbxproj