Move passports subsection to new browse section
Correctly set slug and tag_ids for CuratedList
Avoid the panopticon/publisher user split problems

See: https://github.com/alphagov/govuk_content_models/blob/master/app/models/workflow.rb#L95
Merge pull request #63 from alphagov/move_browse_citizenship_passports

Move passports subsection to new browse section