The map or plat so made, acknowledged and certified shall be filed and recorded in the office of the register of deeds and a copy thereof filed with the county clerk of the county in which the city or addition is situated: Provided, however, That said register of deeds is hereby prohibited from filing and recording such map or plat unless the same shall have attached thereto a certificate in due form showing the approval of said map or plat by the county attorney in case of a town or city or by the governing body in case of a proposed addition to any city of the second or third class or any town.