* Remove legacy user from user factory
* Build instead of creating in some model tests
* Do not create a new DPO for orgs created within user factories
* Add original setup doc
* Update documentation with updated factories
* Fix up DSA creations
* Update question numbers for 2024 lettings
* Stub form start date in question tests
* Stub form start date in page tests
* Fix a typo
* Refactor default question number
* Refactor people question numbers
* Update some question numbers
* Update missing tests
* Update UPRN known question number
* Reorder questions, revert earnings number switch
This renames the case_log to lettings_log as everything we've written so
far has been geared towards lettings of social housing so it makes sense to
have the name describe this. This is also a precursor to adding in stuff for
sales logs (whatever shape that takes)
Co-authored-by: James Rose <james@jbpr.net>