Fake expanding content on thumbnail trails
Merge branch 'master' of github.com:guardian/frontend into expanding-reading-story-packages

Conflicts:
	common/app/assets/stylesheets/module/_article.scss
Setup AB Test
AB test fixes
Byline appears on higher breakpoints and layout has space around it on some viewports
Deport expandable trail html into their own fragments
Remove dependency to common in AB tests when not needed
Fix byline layout regressions
Merge branch 'master' of github.com:guardian/frontend into expanding-reading-story-packages

Conflicts:
	article/app/views/fragments/articleBody.scala.html
	common/app/conf/switches.scala
Remove unnecessary classes in related trails fragment
Plug data into expandable trails
Merge branch 'master' of github.com:guardian/frontend into expanding-reading-story-packages
Merge branch 'master' of github.com:guardian/frontend into expanding-reading-story-packages
Track events in expandable trails
Merge branch 'master' of github.com:guardian/frontend into expanding-reading-story-packages
Upgrade images on click
Get byline if available only
remove rounded corner on read more button
Fix discussion tab inclusion
Nobody is using MongoDB.