webapp/launcher: process custom software image url params and actually create a new project -- minimal MVP
webapp/launcher: process custom software image url params and actually create a new project -- minimal MVP

tscholl2/smc,sagemathinc/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,DrXyzzy/smc,tscholl2/smc,sagemathinc/smc,DrXyzzy/smc,sagemathinc/smc,DrXyzzy/smc,tscholl2/smc,DrXyzzy/smc