switch status checks to WS://

[CouleeApps]

Currently the frontend polls requests every second for every decompiler, which ends up being 8 req/sec/user, which is a lot. We should reduce this number by using only 1 request per binary job, and remember to cancel outstanding requests if the user uploads a new binary. We may be able to use websockets instead, to really tone down the volume of requests

[psifertex]

At the very least could probably just crank down the timeout to several seconds without (much) noticeable user impact?

[CouleeApps]

This has been mitigated for the meantime, though we still want to switch to websockets in the medium term.