Stop the insanity  

Cleanup in preparation for new hierarchical field types 

Fix load-from-h2 command 

Fix docs saying only Postgres is supported on RDS.  [ci skip]

Fix link to pulses doc in readme

Remove migrate down command 

Make things that should be private private 

Fix issues causing DB migration failures; add `migrate force` command 

Make sure field-ids is non-empty / fix API 500 

Fix GET /api/database/:id/idfields if DB has no tables 

Expontential backoff for Metabot reconnection 

Fix modifying fields with legacy "sensitive" field_type