Bing - Fixes
GameTrailers - If we can't find 'data-mgid' this webpage doesn't contain video.
South Park - handle clip URLs in addition to full eps
Howcast - Add Howcast URL Service.
Fix some AR values; comment AR out for now (=quick fix to get stuff working again - issue with the current framework version).
Merge pull request #453 from mmccurdy07/master

South Park - handle clip URLs in addition to full eps
South Park - Fix double var name
Bing - Extra check to see if we get some json formatted data back from the server.
History Channel - Found some errors in Airbrake where 'url' was not set. This update adds an extra check to see if we do get a url or not.
CityTV - Check list length of xpath result.
CNN - Some small code updates
T3 - Make URLPatterns regex more specific
Ustream - raise LiveMediaNotStarted exception instead of returning None if a live stream is not available.
added support for realRTMP
sort out Download media, so only Streaing is added
Merge pull request #3 from HuXDK/master

DR NU edit
Urlservice for videovideo
Merge pull request #454 from dkplex/master

DR NU
DRNU - Remove all (unused) prefs stuff
Fallback - Fix relative redirect URLs.
Merge pull request #455 from eldor/master

Added videovideo.dk urlservice