Video player fixes

Mobile playback fixed - video no longer hidden by default and unhidden
on playing
Footer notifications fixed
Merge remote-tracking branch 'upstream/master'
Allow notification display when video playing

Users can interact with notifications in windowed mode
Remote button visibility fix

Every load the remote button would show up before the page rendered -
now it won't.
Merge pull request #741 from timhobbs/master

Video player fixes