Remove slow ingestion code.

This is a general clean-up of unused storage code. It
removes import-facts, and replaces ingest with ingest-bulk.
The clean-up is fairly aggressive, and any code not essential
was removed.

Fixes #111.
Correct api compatibility version.
Merge pull request #119 from ambiata/topic/remove-slow-ingest

Remove slow ingestion code and general clean-up of unused storage code.