Update Rails DB Schema
Update Rails DB Schema

This updates the syntax of this schema to the current one that Rails
generates. No changes have been made to the database. This has been done
as a step before a migration so that the migration diff is distinct from
Rails code generation.

alphagov/signonotron2,alphagov/signonotron2,alphagov/signonotron2,alphagov/signonotron2