MuseScore 1.3 version by Bertalan Fodor

I made a lot of small commits, for more interesting parts committed the pdfs as well.
Now I'm at the "usable quality" phase I think.
I couldn't follow fully the "don't touch" method, as after a while I just couldn't see what I was writing, so I had to move around stuff. But had a separate phase for the final cleanup, so you get an idea where I was when started the cleanup.