webapp: changing switch time for welcome-to-kucalc banner to expected time
webapp: changing switch time for welcome-to-kucalc banner to expected time

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