S41 Graphics update

[phoenix]

Afaik, the hi-res folder is there for your convenience in case you swapped out back to 'legacy gold' (using the folder also in there) and want to revert to hi-res - it's a back-up, no? So if you're happy with the vanilla hi-res then you won't ever need it. Similarly, there's a back-up 'with hex outlines' folder, in case you swapped to the 'no hex outline' options in there and wanted to return to hex edges. You use the back-up folders just by swapping the files in there into the main map folder. The game reads from the main map folder.