This code, from and after its effective date, shall contain all of the provisions of a general and permanent nature pertaining to the subjects herein enumerated and embraced. All prior ordinances pertaining to the subjects treated by this code shall be deemed repealed from and after the effective date of this code; provided, that any sections or parts of any such ordinance which are not permanent and general in nature and which are severable from the remainder of such ordinance are saved from repeal.