Shall it be City policy to encourage timely development of a mixed-use project in the Bayview on Candlestick Point and Hunters Point Shipyard, including a new 49ers stadium or a non-stadium alternative; shall the City be authorized to transfer park land in Candlestick Point for non-recreational use if the land is replaced with new public parks or open spaces of at least equal size and the transfer meets the measure’s policy objectives; and shall Propositions D and F, approved by the voters in June 1997, be repealed?