Test cleanup
Merge branch 'master' into merge_guides
Part 1 of epic relation cleanup and refactoring.

There are three distinct types of relationships (currently):
 * external (i.e another item's access points point to this one - rename "incoming"?)
 * access point (access points is body for a link)
 * annotation (both items are connected somehow, not via access points)

The display for this on the portal needs much work still.
Merge branch 'master' into merge_guides
Attempt to tidy up related item links in the portal. Still needs lots
of work to look nicer.
Update to play 2.3.2-RC1
Merge branch 'master' into merge_guides