Channel9 - Add missing 'return', fixes #759
YT - disable nonfunctional 1080P MediaObject
Merge pull request #758 from meriko/master

South Park: Fix for updated website
South Park - Keep matching non-CC (international) SP websites.
South Park - Changes to keep the URL Service working on international SP websites.
Merge pull request #760 from mikedm139/yt-720p

YT - disable nonfunctional 1080P MediaObject