Such compensation to the members of the commission for their services as the city council of the city shall, by ordinance, deem proper, the expenses of the charter commission, and the cost of publishing, distributing and advertising the proposal or proposals of the commission or of the city council of the city or of electors and the proclamations as required by section fourteen of this act, and all other expenses of the charter commission and of the city council incurred in connection with any proceedings hereinbefore provided for, when not otherwise provided for by law, shall be paid from the city treasury and the city council of the city shall provide therefor.
53 P.S. § 13115