Reworked Tile-System: you can now hide, focus and destory (the Programm of) Tiles; A litte bit of a framework for Later Registry and Security has taken place in the Tile Class; When Tiles without an aktual Programm behind them are hidden they are being destoryed if they are focused the right Programmm will be started and attached as soon as the registry is done. Layouts now contain only visible tiles and only change those.