quit to main menu, GameState unloading
	modified:   LibreSTR/GameOverlay.cpp
	modified:   LibreSTR/GameOverlay.h
	modified:   LibreSTR/GameState.cpp
	modified:   LibreSTR/GameState.h
	modified:   LibreSTR/MainMenu.cpp
	modified:   LibreSTR/MainMenu.h
	modified:   LibreSTR/MiniMap.cpp
	modified:   LibreSTR/PlayerMap.cpp