Ordinance amending the San Francisco Planning Code by amending Sections 209.3, 217, 710, 711, 712, 713, 714, 715, 716, 717, 718, 719, 720, 721, 722, 723, 724, 725, 726, 727, 728, 729, 730, 810, 811, 812, 813, 814, 815, 816, 817, and 818, and by adding Sections 790.141, and 890.131, to: define medical cannabis dispensaries; prohibit dispensaries in residential-house and residential-mixed zoning districts; permit dispensaries elsewhere subject to restrictions based on a dispensary's proximity to s