* Make mortlen optional for 22/23
* Set extrabor to don't know it is not answered
* Make mortgage lender and othtype optional
* Add hidden don't know options to soctenant and fromprop
* Make frombeds optional
* Display soctenant questions if soctenant is don't know
* infer soctenant values if not given
* Add fromprop field to the sales log
* Fix gender identity typo
* Add previous property type page and questions
* Add previous property type to the shared ownership section