changing ad label events for robustness
Merge branch 'master' of github.com:guardian/frontend into video-ad-label-fix

* 'master' of github.com:guardian/frontend: (47 commits)
  Revert "Revert "Discussion repeat fix""
  updating videojs
  Revert "Discussion repeat fix"
  fix trailing ? in links
  Revert "Split out commercial.js from app"
  make a lazy val
  no need for sharing history module now
  handle array query values
  exclude app from facia and membership
  tidy up build process
  tiding up core.js
  split commercial out of app
  inline curl
  first stab
  trimming values in the js head
  Refactor
  Remove imagecontent JS
  Added page load speed to Omniture analytics
  Fix front-press-live-succes cloudwatch metric
  refactor
  ...
changing events for video ad countdown
Merge pull request #4938 from guardian/video-ad-label-fix

changing preroll countdown events for robustness