Background now changes with levels!

This was a lot more complex than I thought it would be D:

The .conf files are going to be for map-specific settings such as
weather effects, music, whatever springs to mind!

I changed some other things, but I'd rather not recall as mah brain is a
wee bit fuzzy.... Talk to you in the new day...

Oh jesus christ I have to get up at like 8AM...... Fuckkkkkkk

G'night