fix: time calc errors with only one booking per day + working empty kurzarbeit fixed #74

Backend/templates/reportPage.templ

@@ -170,10 +170,12 @@ templ workDayWeekComponent(workDay *models.WorkDay) {
 		<div class="flex flex-row gap-2 items-center">
 			<span class="icon-[material-symbols-light--schedule-outline] flex-shrink-0"></span>
 			switch  {
-				case !workDay.TimeFrom.Equal(workDay.TimeTo):
+				case !workDay.IsEmpty():
 					<span>{ workDay.TimeFrom.Format("15:04") }</span>
 					<span>-</span>
 					<span>{ workDay.TimeTo.Format("15:04") }</span>
+				case workDay.IsKurzArbeit():
+					<span>Kurzarbeit</span>
 				default:
 					<p>Keine Anwesenheit</p>
 			}