wrote method for getting enlightable sqaures within the square list
changed a few things in the GUI to be able to use our model
Merge remote-tracking branch 'origin/master'

Conflicts:
	bin/start_gui/MainWindow.class
	bin/start_gui/StartWindow$1.class
	bin/start_gui/StartWindow.class
	src/start_gui/MainWindow.java
	src/start_gui/StartWindow.java