* Pluralise buyer in household characteristics/setup
* Pluralise buyer in sales information sections
* Pluralise buyer in savings
* Pluralise other buyers, update privacy notice test
* Pluralise buyer in validations and translations
* Route to pages when joint purchase is not answered
* Fix apostrophes
* Update translations
* More updates
* feat: core functionality
* feat: update schema.rb
* feat: add link for privacy notice, refactor to separate tenant/buyer
* feat: make privacy notices open in new tab
* test: make previous tests pass
* test: add new tests