Add parse.com framework
Merge branch 'master' into ershov

* master:
  Gameplay GUI.

Conflicts:
	src/Erundopel/Erundopel.xcodeproj/project.pbxproj
Started adding Parse synchronisation
Started adding Parse synchronisation
Merge branch 'ershov' of https://github.com/djachenko/Erundopel into ershov

* 'ershov' of https://github.com/djachenko/Erundopel:
  Started adding Parse synchronisation

Conflicts:
	src/Erundopel/Erundopel/ParseManager.h
	src/Erundopel/Erundopel/ParseManager.m
	src/Erundopel/Erundopel/ParseObject.h
Add Parse helper objects for all entities
Make app not crash if there are no cards (stub)
Add all insert-methods for cards, words etc.
Remove bad attempt to create Parse-compatible entities
Add last update date fixation for all tables
Add basic sync with Parse (get all updates from server by timestamp)
Add fixed cards generator and card meanings shuffle
Implemented random card generation
Fix repeating meanings issue
Add choose game mode screen
Fix repeated meanings issue

It wasn't working without isEqual/hash methods properly defined for Meaning
Merge branch 'djachenko'

* djachenko:
  Login screen started, card view controllers reused
  Statistics counts
  Help view controller.
  Adding content controller
  Game logic implemented already.

Conflicts:
	src/Erundopel/Erundopel.xcodeproj/project.pbxproj
	src/Erundopel/Erundopel/GameVC.m
	src/Erundopel/Erundopel/MainMenuVC.m