Add an additional field of health code.
Add backfill of user consent.
More test.
Logger fix.
Rename ResearchConsent to ConsentSignature.
Add BackfillService.
Wire up BackfillService.
Remove Stormpath - nice!
Remove Stormpath from BackfillController.
Copy over signed-on timestamp from old.
Merge pull request #161 from eric-wu/develop

Backfill user consent