Edition is now abstracted away from Site.

You no longer care about the Site (read domain) when asking for an edition.

This is part of moving us to a single domain
Merge branch 'master' of github.com:guardian/frontend into single-domain
Most dependencies on Site are now gone.

The few remaining ones will be deleted after single domain.
Merge branch 'master' of github.com:guardian/frontend into single-domain
No need for that TODO, all done
Put background *after* latest
New styling for timeline
Merge branch 'story-tweaks' of github.com:guardian/frontend into story-tweaks
Fixed styling issues with arrows
Wrapped conditional around chapter show more
STOP MAKING MISTAKES
Merge pull request #787 from guardian/stories-front-ab-test

STOP MAKING MISTAKES
Type changes with Richard
Merge pull request #784 from guardian/story-tweaks

New story timeline styling
add protocol to social url
Merge pull request #788 from guardian/story-url-social

Add protocol to social url
handle tests length bug
add in last position
forget fancy styling
adding tag to data link if local election