seperated create abwesenheit button + added first part of frontend logic

Backend/models/workDay.go

@@ -101,12 +101,7 @@ func (d *WorkDay) GetWorkDays(card_uid string, tsFrom, tsTo time.Time) []WorkDay
 			workDay.calcPauseTime()
 		}
 
-		//TODO: remove
-		if len(workDay.Bookings) == 1 && workDay.Bookings[0].CounterId == 0 {
-			log.Println("No booking")
-		} else {
-			workDays = append(workDays, workDay)
-		}
+		workDays = append(workDays, workDay)
 	}
 	if err = rows.Err(); err != nil {
 		return workDays
@@ -130,6 +125,9 @@ func (d *WorkDay) calcPauseTime() {
 
 // Gets the duration someone worked that day
 func (d *WorkDay) getWorkTime() {
+	if len(d.Bookings) <= 1 && d.Bookings[0].CounterId == 0 {
+		return
+	}
 	var workTime, pauseTime time.Duration
 	var lastBooking Booking
 	for _, booking := range d.Bookings {