Fix out of sync prod database schema

[dacook]

What we should change and why (this is tech debt)

Some production database schemas are out of sync. This can cause big problems.

So we should review all differences and evaluate which ones should be addressed (including the one linked above)

We can probably run git diff db/schema.rb on every server with ansible.

Any differences of consequence, should be fixed. Maybe we just manually update each server with psql, but it'd be much better if we can write a rails migration that does it. (Maybe a condition can check the state of the db column, and migrate if needed. maybe the rails migration handles that automatically.)

Impact and timeline

I think this should be prioritised before we forget about it. We don't want another S1