Fix JS interaction on timeline
Merge pull request #763 from guardian/story-tweaks

Fix JS interaction on timeline
Merge pull request #761 from guardian/single-domain

All ajax calls now append the edition as a parameter.
Fixed failing Jasmin tests by fixing config for Ajax
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