Now all _extract_*_formats routines return a list
The webpage also creates URLs which include additional text that defines the sorting order on the page like "aktuellste" (most current) and "meist-gesehen" (most seen), e.g.: http://www.zdf.de/ZDFmediathek/kanaluebersicht/aktuellste/332 http://www.zdf.de/ZDFmediathek/kanaluebersicht/meist-gesehen/332
This also comes with a lot of extra format fields Fixes #1518