[OBSOLETE] Submissions for auto-downloadable graphic sets

[namida]

Added.

Please do note for future styles: The proper naming convention would be eg. arty_lego. However, as this one has been around for quite some time now, keeping a consistent name is more important than following this convention so I've added it as-is.

[GigaLem]

Update
These tiles now have proper backgrounds

[namida]

I've moved the auto-downloadable stuff database to the new NeoLemmix site already (even though the site isn't ready for general use yet, I think it's ready enough for this). It should be 100% backwards-compatible; please let me know if you encounter any issues that didn't happen before.

Advantages of this: All I have to do now to add / update a graphic set is literally upload the file. Previously, I had to upload the file and add / modify its last updated date in a text file, which was slightly more annoying. Although NeoLemmix still makes use of this text file, the server now automatically generates it. Also, this will be much easier to in the future integrate with a method of allowing people to upload content themself, although I plan to hold off on doing this until new-formats goes live.