v2.1.0-preview.4.1

Highlights:
This was a short sprint due to travel and multi-day off-sites. We split our time between addressing a number of SF85-specific details, cross-form defects, and laying the ground work for kickback enhancements.

This will be the last release where the corresponding issue management/sprint plan is available in GitHub. Going forward, the sprint boards and backlog of stories, defects, etc. will be managed in an internal NBIS tool.

Detailed list of issues:
https://github.com/18F/e-QIP-prototype/projects/18

Specific improvements:

• Fixed defect where education reference would incorrectly say "I don't know".
• Correctly encode a response of "I don't know" in the SF-86 XML for clearance level.
• Require at least one phone number for each instance of a person who knows you well.
• Initial release of dbmigrate command-line tool for updating the backend database schema separate from the API server itself.
• Initial release release of dbreset to drop and create the backend database for automated testing.