* Include shared validations in sales log model and run validate_numeric_min_max method
* Add non london hard max income validation
* Add london income validation
* Remove child vlidation because buyer cannot be a child
* Add income1_value_check column
* Add buyer_1_income_value_check question and page
* Update income1_under_soft_min?
* Add mortgage and value check column
* Add mortgage value check page
* Update mortgage_over_soft_max? in soft validateions
* Remove unused error message
* Display person 2, 3, 4 age question if their details are known
* Infer check answers value for age questions as 'Not known'
* Hide age known question in check answers if it is answered yes or no
* Add card numbers to household characteristics question
* Update gender identity depends on
* lint
* Add a field to completed sales log in factory
* Update person 1 gender identity to depend on the people count
* Do not show buyer 2 questions if it is not a joint purchase