Shall the provisions of the Charter of the City of Sacramento that govern the Sacramento City Employees Retirement System be amended to change the definition of "final compensation" from a three year average to a single highest paid year formula; to allow employer payment of required employee contributions; to allow the City Council to change the age and years of service formula by ordinance; to allow the City Council to appropriate "Excess Funding" in the system to other specified municipal public purposes; and to allow the City Council to enact ordinances to clarify or implement these amendments?