Updated models to include given name, middle name, surname, and name order.
Adapted person forms to new name structure.
Purged refs to person.name and attendee.name.
Purged a lingering reference to nickname.
Migration needs to handle both Persons and Attendees.
Allow filtering by given name.
Cleanup.
Fixed reverse migration for 0014.
Merge branch 'naming'
Merge branch 'master' into steps