Stubbed out commenter activity endpoint.
Merge branch 'master' into discussion-activity

Conflicts:
	discussion/app/discussion/CommentPage.scala
Fixing merge error.
Added support for JSON endpoint.
imageSrc in pressed
Add initial ImageOverride object and override trailPicture in Content
Add overrided image to elements
Add simple ProfileDicussions for profile page
Persist width and height
Add simple ProfileDicussions for profile page
Simple Profile Discussions page
Persist image width/height in meta
Reorder chain
No need for imageSrc in pressed.json
Add more tests to TitleTest
Add styling to profile discussions
Set Applications Servers to Read DFP Data

Needed to recognise sponsored pages.
Update dev-build routes
Merge pull request #4327 from guardian/kc-application-dfp

Set Applications Servers to Read DFP Data
display news/auto containers using news template