Add FMDB to project, start implementing Database class (adapter to FMDB)
Merge branch 'master' into ershov

* master:
  CardVC linked into project. It appears after choosing "New game" option in main menu.
  View and controller for card representation.
  Entities initializers added
  Model entity interface for card representation
  Model entity interface for word article representation
  Low-level model entity interface for wordrepresentation
  Low-level model entity interface for meaning representation

Conflicts:
	src/Erundopel/Erundopel.xcodeproj/project.pbxproj
	src/Erundopel/Erundopel/AppDelegate.m
Added DB scheme creation (all except users)
Implemented basic database (no users)