CS to use denormalised ID values in ES

QA: running ingestion to see how it behaves. Not landing before it ends.
It would only find ~user/ part of the URL. So, if there is ~rharding/trusty, then filtering with "&owner=rhading" will return all your charms. But in some next PR, we should have better search over extra info, which we don't use at all now. And that would allow us to search by real names of contributors, etc.