Merge pull request #1 from TodorBalabanov/master

Merge with master fork.
Merge pull request #2 from TodorBalabanov/master

Merge with master fork.
Game screen UI should be designed.
Merge pull request #3 from TodorBalabanov/master

New art have been added.
Images reorganization was done.
All images are on their places.
Merge pull request #2 from InaBaltadzhieva/master

Images and listeners.
Constant name was changed.
Deck was moved in its own class.
Game state class was added!
Game state class was extended.
Card panel class was split to card panel and card board classes.
Splitting of the classes were done.
Merge pull request #3 from TiaDalma/master

Splitting of the classes were done.
Repaint function should be implemented.
Merge pull request #4 from MariaBarova/master

Repaint function should be implemented.
Merge pull request #1 from TodorBalabanov/master

Merge with master fork.
Small cosmetic changes.
Merge pull request #5 from TiaDalma/master

Small changes.
Some of the stats were added.