webapp/course: insert the skip button either before return or in peer grading mode, after it is peer collected
webapp/course: insert the skip button either before return or in peer grading mode, after it is peer collected

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