78.570.  Powers of council — city manager. — 1.  Except as herein otherwise provided the council of any city organizing under sections 78.430 to 78.640 shall have all of the powers now or hereafter given to the council or to the mayor and council jointly, under the law by which such city adopting said sections was governed under its former organization; and shall have such power over and control of the administration of the city government as is provided in said sections.

  2.  It shall be the duty of the council to pass all ordinances and other measures conducive to the welfare of the city and to the proper carrying out of the provisions of sections 78.430 to 78.640. It shall appoint a suitable person not a member of the council to be the administrative head of the city government whose official title shall be "city manager".  The council shall also provide for all offices and positions in addition to those herein specified, which may become necessary for the proper carrying on of the work of the city, and shall fix the salary and compensation of all officers and employees of the city not herein provided for.  All officers of the city shall be paid in equal monthly installments for their services and all employees of the city shall be paid monthly or at such shorter periods as the council shall determine.  The creation of all offices and salaries attached thereto, which may be provided for by the council under sections 78.430 to 78.640, shall be by ordinance, and they shall all be for an indefinite term.  The council shall also provide office rooms at the city hall or at some other convenient and suitable place in the city for the transaction of the business of the city and for the convenience of its officers.