old_contents: from django.conf.urls import url
  
  from .views import control_view, rechnung_view
  
  app_name = 'Workflow'
  
  urlpatterns = [
      url('^skripte$', control_view, name='skripte'),
      url('^rechnungen$', rechnung_view, name='rechnungen'),
  ]
  
new_contents: from django.conf.urls import url
  
  from .views import control_view, rechnung_view
  
  app_name = 'Workflow'
  
  urlpatterns = [
      url('^skripte/$', control_view, name='skripte'),
      url('^rechnungen/$', rechnung_view, name='rechnungen'),
  ]
  
subject: add trailing slashes