Add error graphs and 2nd occurence
Usable links for apparently broken content
Fix case in FaciaToolController where you would need scala.language.postfixOps
DRY: Remove some repetition in the ID API POST requests

It's quite fiddly to get rid of all the repetition without using some kind
of builder pattern, but this is a start.

This is a reapplication of commit 08615842 from PR #3759, which was
reverted with commit 1a3d221d.
Merge pull request #3756 from guardian/incident-report-20140327

Incident: error graphs and 2nd occurence
Merge pull request #3764 from guardian/facia-tool-error-link

Facia tool: link to "broken" content
Merge branch 'master' into ab-blended-containers
Alternate CIF containers