Fixed issue #34: Networking did not properly show valid server responses
Changes:
 - Added Enum for ARMGameServerResponseErrorCode
 - Added ARMGameServerResponseErrorCode
 - Removed improper error handling in GameServerCommunicator
 - Added switch statement in NetworkViewController for new error codes

Additional Changes:
 - Made user name cell not selectable
 - Set the text color to the tint color of the currentPlayersLabel in playMode