course: bug fix -- "(student used project...") time doesn't update, due to how computed and lack of dependency on projects store.
course: bug fix -- "(student used project...") time doesn't update, due to how computed and lack of dependency on projects store.

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