anchor.diff:                                  "class" => "form-control",
                                   "placeholder" => "Monthly Net Income",
                                   'ng-disabled' => "!isCheckboxSelected('1')",
  -                                "ng-model" => "affordability.earnings.person2.net_pay",
  +                                "ng-model" => "affordability.earnings.person1.net_pay",
  +                                "ng-initial" => "",
                                   "currency" => '',
                                   "data-a-sign" =>"£",
                                   "data-m-dec" =>"0",
  
positive.code:           <%= person.label :annual_income, I18n.t("affordability.activemodel.attributes.mortgage_calculator/person.annual_income_0") %>
            <%= person.text_field :annual_income,
                                  "class" => "form-control",
                                  "ng-model" => "affordability.earnings.person1.annual",
                                  "placeholder" => "Your yearly income",
                                  "autofocus" => "",
                                  "currency" => '',
  
negative.code:           <%= person.label :extra_income, I18n.t("affordability.activemodel.attributes.mortgage_calculator/person.extra_income_1") %>
            <%= person.text_field :extra_income,
                                  "class" => "form-control",
                                  "ng-model" => "affordability.earnings.person1.extra",
                                  "ng-initial" => "",
                                  "placeholder" => "Any extra income",
                                  'ng-disabled' => "!isCheckboxSelected('1')",
                                  "currency" => '',
  