Implicit ingest?

@pkerpedjiev : Thinking about how to make launch simpler, particularly if it may be coming from Refinery. I could imagine the system simply ingesting all files in the mounted directory by default on launch, and creating by itself a plausible default viewconf that references them all. Ingest is not instantaneous, so we probably also want some way of indicating through the UI that ingest has begun, but is not complete.

Thoughts?