Bugfix: Fehler bei nicht vorhandenen Daten beseitigen

ui/src/routes/WorkingHours/Formular.svelte

@@ -12,10 +12,10 @@
                 Controller.nextDay()
             });
         },
-        'nextDay': () => {
+        'nextDay': async () => {
             let actDate = new TimekeepingDate(activeRecord.workingDay)
             let nextDay = actDate.getNextDay()
-            activeRecord = WorkingHoursRepository.readOrNew(nextDay.getDateString())
+            activeRecord = await WorkingHoursRepository.readOrNew(nextDay.getDateString())
         },
         'cancelActiveRecord': () => {
             activeRecord = null;

ui/src/routes/WorkingHours/List.svelte

@@ -18,9 +18,9 @@
                 isLoading = false
             });
         },
-        'newRecord': () => {
+        'newRecord': async () => {
             const actDate = new TimekeepingDate()
-            activeRecord = WorkingHoursRepository.readOrNew(actDate.getDateString())
+            activeRecord = await WorkingHoursRepository.readOrNew(actDate.getDateString())
         },
         'selectActiveRecord': record => WorkingHoursRepository.read(record.workingDay).then(data => {
             if (data === null) {