Add 'has-discussion' modifier when a trail has a discussion
remove discussion moving ab test
fix ab formatting that if fucked up
and again
Added test data
Merge pull request #3963 from guardian/remove-discussion-below-story-package-ab

remove discussion moving ab test
Fix onward component tracking
Merge pull request #3968 from guardian/onward-component-tracking

Fix onward component tracking
Merge pull request #3962 from guardian/has-discussion-class

Add 'has-discussion' modifier when a trail has a discussion
Merge remote-tracking branch 'origin/master' into pad-mobile-share-buttons
removed extran newline