Just some art changes

That was a bad weekend, lots of things happened, but I also got sick... so no real progress this time.

I just exchanged some of the old pngs, that I don't even know where I got them from, with some very basic svg. Since I'm not an artist, it actually seems to look worse than before, as the backgrounds are not all FLAT. But it distracts less, and I won't get in a legal fight for it XD