Fixes and improvements on end game
Player.java
   -- removed 'nextPlayerCardsNumber' parameter from notyfy<...>Turn
   + nextPlayerCardsCount() method, based on currentGamePlayersInfo[]
   + playersInGameCount() method
GameServer.java
   -- reverted notifications
   PlayerInfo:
      + inGame field and isInGame() method
ConsolePlayer.java
   -- removed 'nextPlayerCardsNumber' field and it's logic
AIPlayer.java
   -- removed 'nextPlayerCardsNumber' field and it's logic
   chooseCardsToPut():
      > fixed choosing one "true" card in end game
      + solution for "AAAA8 vs 888" turn