Amending Chapter 10-800 of The Philadelphia Code entitled "Safety," to add a new Section 10-828 entitled "Firearms and Other Dangerous Weapons in City Hall," and amending Section 10-810 of The Philadelphia Code related to Weapons and Dangerous Devices, by making findings regarding the need to further regulate firearms and other dangerous weapons, by prohibiting and establishing penalties for the possession of weapons in City Hall and by authorizing the confiscation and surrender of such weapons in certain circumstances; all subject to certain terms and conditions. — Open Common Ground