Added dashboard for Ironic

Covers openstack/ironic, openstack/ironic-specs,
       openstack/python-ironicclient and openstack/ironic-python-agent

Ordering:
0. Viewer's own patches, that have any kind of negative feedback
1. Specs
2. Changes w/o negative feedback, with +2 already
3. Changes that did not have any feedback for 5 days
4. Changes without negative feedback (no more than 50)
5. Other changes (no more than 20)

Shows only verified patches, except for 0 and 5.
Never shows WIP patches.

Change-Id: I4617e329011de60008494d34124405922a9e77da