Fixed issue #21
Changes:
	- Remove all images other than the default logo image at application launch
	- Bluetooth manager sends “bluetoothWillConnectToNewGameTile” when the user chooses to connect to another game tile, and ARMPlayerInfo deletes the previous stored image file.
	- GameServerCommunicator records its files when it downloads them, and deletes them when the “leaveGameSession” message is sent.