fixing flash prerolls
modify vast format fix
Merge branch 'master' of github.com:guardian/frontend into flv-prerolls

* 'master' of github.com:guardian/frontend: (30 commits)
  Fixing the build
  Change release message logic for sp articles
  Cleaning up code
  adding test for inline merchandising unit
  adding link to book title and author
  Removed exploratory test
  changing size to 88 x 85
  Make profile comment search feature permenant
  Usability improvements.
  Make all instances of video icon relative to node text size not rot i.e. em vs rem
  Change video icon for video links lists
  Change video icon for standard facia video items
  Change video icon in supporting links
  Restrict the list to a path size of < 5
  Working interface for approving new ad units
  better name for function
  Do not trace the publish message
  text and comment
  formatting of routes file
  abstract out media items
  ...
Merge pull request #5273 from guardian/flv-prerolls

fixing flash prerolls