* Create DuplicateLogReference
* Set and clear duplicate log references
* Export duplicate_log_reference_id for lettings
* Export duplicate_log_reference_id for sales
* Export duplicate_log_reference_id in xml
* Update tests
* Update existing duplicate log references
* Rename a field
* Add missing sales deduplication steps
* Set duplicate_set_id straight on logs
* Do not update updated_at to prevent export
* Increment duplicate_set_id
* Update duplicates when they change sets
* Remove duplicates when deleting logs
* correctly update duplicate set IDs when answer is changed through normal form flow
* CLDC-3110: Update hard max income for ecstat 8 to 2000
* CLDC-3110: Update hard max income for ecstat 10 to match new highest max
* CLDC-3110: Base income validations on all tenants for lettings logs
* CLDC-3110: Tweak validation messages
* CLDC-3110: Use prefer not to say values when tenant ecstat is not specified
* feat: update datetime format in csv services
* feat: update tests
* feat: keep system date fields in iso8601 format
* feat: merge fix
* feat: update tests
* feat: wip commit add person details to sales log csv service
* feat: add comments
* feat: update regex to include agen_known fields
* feat: revert
* feat: reject age_known fields and map codes and values to age fields instead
* feat: add age1_known
* feat: combine age not known and details not known fields
* feat: update tests
* refactor: lint
* feat: update tests
* feat: update lettings tests
* feat: update question test
* Adjust xml export to export refused details, update refused to take into account details_unknown
* Recalculate refused values for lettings logs with unknown person details
* Export refused values in the csv
* Update file names
* form handler to return all questions from lettings forms for all years with ordering interleaved
functionality and tests
* refactor lettings log csv service and all associated tests
remove methods on log models when we can call them directly on associated models
update job to call the service directly with the collection of logs rather
minor modifications to the sales log csv service
update many test files to test the appropriate logic in the appropriate place
* tidying
final amendments to tests
remove commented code
rename variable
* change the position of the rent value check field in the headers
* CLDC-2492 add creation method field to logs (#1738)
* create migrations to add creation method fields to both log types
* add enum definition to logs for creation method
* upadte csv export services to retrieve creation method values direct from the log, remove methods previously used from the log model
* run migrations to update schema
* ensure that logs created via bulk upload have this set correctly when created