Blueprint shows up as proposed for long-finished sprint

[Matthew Paul Thomas]

<https://blueprints.launchpad.net/ubuntu/+spec/gaim-calendar-auto-aways> shows that the blueprint has been proposed, but not accepted or rejected, for discussion at "uds-paris".

Following the link to the sprint reveals that Ubuntu Paris Developer Summit was held from "10:00 on Monday, 2006-06-19 till 17:00 on Friday, 2006-06-23". Since that was over two years ago, the chance of the blueprint ever being accepted or rejected for discussing there seems slim. So it's not helpful for Launchpad to present it as if it's still an open question.

One way of improving this would be to grey out sprints that have already happened. This would also make future sprints easier to distinguish from past ones.