Beta bug fix release #4

* Real IAP has been implemented, but simulated purchases are still enabled.
* You can now create two games at a time, and if you create more, you will see the IAP screen. You can either purchase premium or post on Facebook (not yet implemented, but you can still use it.)
* Updated graphics when having no games and on new game screen.
* Fixed some underlying issues with Core Data, which might have caused problems.
* Updated sounds!
* Games will no longer be in invited-state when entering the game.