Initial GUI Code

Added MainMenu user control
Modified MainWindow
Merge remote-tracking branch 'origin/master'

Conflicts:
	Tetris/obj/Debug/Tetris_MarkupCompile.i.cache
Merge remote-tracking branch 'origin/master'

Conflicts:
	Tetris/obj/Debug/Tetris_MarkupCompile.i.cache
Merge remote-tracking branch 'origin/master'

Conflicts:
	Tetris/obj/Debug/Tetris_MarkupCompile.i.cache