highscore system added, accessible from main menu.
Merge branch 'highscore'

Conflicts Resolved:
	SP1Framework/SP1Framework.vcxproj
	SP1Framework/SP1Framework.vcxproj.filters
	SP1Framework/game.cpp
	SP1Framework/gameStage.cpp
	SP1Framework/gameStage.h

Notes: High score menu needs to be modified to bring it in line with how the other menus are loaded