All acts and parts of acts in conflict with this article are inoperative in municipalities under the commission form of municipal government. However, nothing contained in this article shall in any way repeal, amend, or affect (1) the law pertaining to the making of local improvements under Article 9, or (2) any public school law in operation in any municipality which adopts this article, anything contained in this article to the contrary notwithstanding, or (3) any general law relating to parks.