The Council shall by ordinances adopt a comprehensive general plan for the orderly development of the city and plans for the re-development of areas or districts therein, provided, however, that a part or parts thereof may be adopted or amended from time to time, by creating areas, zones, and districts of permitted and excluded uses of such numbers or classifications, and rules, regulations, limitations and restrictions pertaining to each as will promote the general welfare of the City and its inhabitants. It shall have full legislative authority to accomplish those matters over which the planning and zoning commission is given power of recommendation, provided, however, any such matter shall be first submitted to the planning and zoning commission, and no action of Council shall be taken overruling the action of said commission except by a vote of two-thirds of the members of Council.