First implementation of the GUI/config-system

I decided to use four files:
 Engine.py: 	Here is the whole code, all def's, the engine.
 Spiel.py: 	Here is the GUI-Stuff.
 config.py: 	Here you can decide your custom theme.
 main.py: 	Simply starts the gui.

Everything is just working fine for this version, Spiel.py will be renamed soon.