Added main view controller with button to open camera screen
Added methods to work with camera
added login screen with FaceBook
Rewritten login screen with Accounts and Social frameworks. Created User model
changed the method names to more understandable
source files' restructuring.  placing them into folders and groups
added model data filling from FaceBook and exceptions via warnings for user
added buttons view and toolbar view
added storing user information in NSUserDefaults (class PMPActiveAccountService)
added returning saved user from ActiveAccountService
cleaned LoginScreen from unused stuff
no message
added deleting User Info from NSUserDefaults (Logout). minor fixes in ActiveAccountService
added blocks logic to ActionSheet
merging picking photo with side menu
added stubbed feed
merged with scherbakov and logot
syntax fixes (gavryushov)
syntax fixed (pavlenko)
fixed according to Yury requirements (gavryushov)