Removes GamePicker. It served us well.
project.pbxproj says goodbye to GamePicker. Beware of merge conflicts, comrades!
Merge remote-tracking branch 'upstream/master'

Conflicts:
	OpenEmu/GameFilePicker.xib
	OpenEmu/OpenEmu.xcodeproj/project.pbxproj
Fix control+click behavior
Changes to grid view items are saved immediately so the grid view is forced to reload and rearrange all visible items. This nearly fixes #485.
QuickSave shows up in states menu. Fixes #507.
Cheat menu only shows separator if cheats are available.
Implemented quick save slots. Fixes #455. Not enabled by default, check debug preferences. Keyboard shortcuts need to be fixed.
Added option to cancel quitting (fixes #202)
View mode buttons can't be deselected anymore.
Fixed #516 :P
Merge branch 'master' of https://github.com/OpenEmu/OpenEmu

Conflicts:
	OpenEmu/OpenEmu.xcodeproj/project.pbxproj
resolve conflict w/ upstream master