Refactored using static dictionary var
Renamed main class
Removed dictionary parameter from action method of CardStateWithExercise
Dictionary Events filtration, step 1
Adopted CDA_api 1.1
Renamed Reloader -> ResourceHolder; implemented StateLoadDictionary
Removed CardStateWithExercise state logic; Refactored WindowsManager -> BaseManager
Renamed CardStateContext -> IEventContext
Totally redesigned Card/Exercise frames
Fixed minor bugs: show main window after finishing exercise; fixed AddMeaning listener
Usage of observer patern delegated to BaseManager