Get rid of duration

http/server.go

@@ -136,7 +136,6 @@ func pageDoCreate(name, description string, earliest, latest time.Time) h.Term {
 		Description:  description,
 		EarliestDate: earliest,
 		LatestDate:   latest,
-		Duration:     1,
 	})
 	if err != nil {
 		return h.Text(err.Error())