updated input from UI and UI mechanism

changes:
dialog___.java: forced user to check Ready button in order to start game
dialog___.java: get each ability input from ui p1 - p4 and save to int
array ability
main.java: get ability array from dialg___.java and save it to
abilityFromGUI array
ability is 0 if undefined (choosing p4 ability when only 2 players
exist)