Search queries that should run faster

Created by: rvantonder

I'm starting a broad issue to track queries that should run faster as I encounter them.

• lang:javascript select:repo takes too long. This is a combination of (a) I don't think select:repo on global search streams, there is a known issue for this somewhere, and (b) we are doing too much work by continuing a search until we fill 500 results. But the main issue is (a). Also, why aren't the repos ranked.

• repo:contains.file(...) is slow for almost basically the same reason as above and we should optimize the easy cases