This is work in progress to make RB integrate better with different bug trackers. This review request lays foundation for tighter bug tracker support by providing an interface that hosting providers can implement to enable more advanced functionality with bug trackers. Currently the interface offers ways to query information about given bug. This information is shown on an infobox shown when a bug is mouse hovered.

There is a discussion on this at review board mailing list: https://groups.google.com/d/msg/reviewboard/DymDgBu_9_Q/HK91wXJ4PhcJ.

I have been testing things with JIRA bug tracker.