Don't show ER patches under open reviews

Don't show open reviews for elastic-recheck patches on
status.openstack.org/elastic-recheck

Also add some debugging info for when things go wrong.

Change-Id: I224f6b7b23ef03506f4f0c8f341d7470b93e5c06
Closes-Bug: #1362348
Merge "Don't show ER patches under open reviews"