Revert "Merge pull request #3014 from guardian/breaking-news-label"

This reverts commit f1de9417272b64e5e65911c1f5fef1ec3f953e49, reversing
changes made to 14ec88eac72c0f2e775620453bb259ab1e1565e9.

Changing back the "Breaking" label to "Breaking News" as per Editorial's request.

![ ](http://media.giphy.com/media/143vPc6b08locw/giphy.gif)