Issue title should display what repo it came from

[edunham]

Now that servo-starters have multi-repo support, this issue's description should read "servo-starters #21" instead of just "#21" in the brackets. It would also be nice for the repo name and issue number to all be part of the link to the issue, since single-character links like low numbered issues can be slightly difficult to click.

[jdm]

Fixed by #23.