Videojs update & safari adblock fix

- Re-forked videojs, videojs-vast, videojs-contrib-ads (safari adblock fix required changes to all three)
- Clean " - video" from video headlines on video pages

Most of the videojs-vast / videojs-contrib-ads diffs are changes pulled from the main repos while updating, so they can be safely ignored. I'll be putting in PRs to the respective repos.
@robertberry Could we apply this when we link to a video on fronts too?