Show menu pdf for next week already an saturdays and sundays (issue #232)

biscuit/apps/mensa/views.py

 import datetime
 import os
+import time
 
 from django.contrib.auth.decorators import login_required, permission_required
 from django.http import FileResponse
@@ -66,6 +67,9 @@ def show_current(request):
     if days_to_add < 0:
         days_to_add = days_to_add + 7
 
+    if days_to_add == 6 or days_to_add == 7:
+        calendar_week += 1
+
     # Create datetime with next friday and time 14:10
     friday = current_date + datetime.timedelta(days=days_to_add)
     friday_14_10 = timezone.datetime(friday.year, friday.month, friday.day, 14, 10)