deleted old overlays and replaced them with normalized ones. Also added gosthy's 'immersive' overlay
forgot to delete the old overlays in the previous commit
last minute fix to portrait diagonals, which were too small. Also deleted redundant 'normalized' directory
fixes to portrait buttons and dpad, softened edges on many buttons, added opaque gba and psx overlays
Merge pull request #434 from hizzlekizzle/master

More overlay updates