Permitting Secondary Uses of Sidewalks and Public Rights of Way, Including Sandwich Boards, Sidewalks Sales by Merchants and Sidewalk Cafes, Adding New Chapter 12.42 and Adding New Sections 17.56.035 and 17.56.045, Amending 12.04 and 12.44.040, 15.44.010, 15.44.050, 15.44.070 and 15.44.080