Merge branch 'master', remote-tracking branch 'origin'
add video richsnippet data
Merge remote-tracking branch 'origin/master' into google-video-search-thumbnails
use xhtml notation for self closing tags
fixed erroneous merge issue
use xhtml notation for self closing tags
add spaces to self-closing tags
Merge remote-tracking branch 'origin/master' into google-video-search-thumbnails
Merge pull request #5374 from guardian/google-video-search-thumbnails

Google video search thumbnails