Distribution series index OOPS

Actually, the OOPS shows 4s of sql time and 15s of non-SQL time, so it's not yet clear to me what's causing the timeout.

On staging, though, the OOPS (OOPS-1361S7438) shows 18s of SQL time.

After removing the section which lists milestones from that page, it renders in less than a second, with only 65 queries. And that's on staging, which is a lot slower than edge/lpnet.

The bugtask status counts are the issue. (getting the bugtasks for each milestone is too costly) we can reduce the number of queries by restricting the statuscounts to active milestones

In the example case, there will be only three milestones with status counts. If you change the template that renders the row, you will be change product series and +series

I've done the change suggested by Curtis, to only display the bugs/blueprints summary for active milestones and now the page is rendering in 6s on staging, issuing half the queries it used to.