Extracted the code for court address form checking

It checks if the court address is already populated. Since it was going
to repeat in multiple places... moved it into its own function.
Court finder scenario fix

In cases when the user filled in the form and went to the confirmation
page, but then returned back to the form, the label above the court
address form would indicate that the court address is not present. This
scenario tests for that and corrects the behavior.