[domains] https players for Revision3
[domains] gettty images have max-width now
[domains] trick mixcloud plugin to fallback to generic parsers on non-music URLs

ex.: on
http://www.mixcloud.com/competitions/nocturnal-wonderland-2014-dj-compet
ition/
[domains] fix titles for SlideRocket and SmugMug for not-supported URLs
[domains] support short urls for mixbit
[generic] return media=player flag for video_src and oembed.video too
[generic] clean up robots noindex tags
[domains] remove Vevo - now well covered by Twitter & OG
[domains] remove Yahoo Screen - now well covered by Twitter & OG