Mozilla Flaw

Yeah, they probably know about this already and I'm too lazy to go check, but Firefox doesn't save web pages correctly, and therefore WebRenderer doesn't either. CSS pages are not localized, so they still point to relative references that don't exist. In addition, the web page isn't encoded correctly so on reload it has those non-renderable characters. I've fixed the problem somewhat by post-processing the files with pattern replacement to localize some of the CSS, but there are definitely multiple cases that slip by that, so it would be much better if they took care of it.