Update privacy policy and privacy act notice to reflect SORN routine uses

The privacy act and privacy policy need to include disclosures from
the SORN's routine uses in order to comprehensively describe when
and where your information may be shared.
More routine use adjustments and link to GSA Privacy Program
Remove extra )
Generate HTML/MD for updated privacy docs
Merge pull request #456 from 18F/hotfix/privacy-policy

Update privacy policy and privacy act notice to reflect SORN routine uses