Added 3sat (Austria/Germany/Switzerland) to the Wiki.

Running into problems with
http://www.sat1.at/service/teletext/
http://www.sat1.ch/service/teletext/

Never finds the regex for the prediction urls. dont know what it is, but the whole thing is full of "?" and "+" and whatnot in the URLs and in the HTML, maybe I really don't know how to properly escape it. Maybe someone else has more luck.