docs: def last_event(request, slug):
      "Displays a list of all services and their current status."
      
      try:
          service = Service.objects.get(slug=slug)
      except Service.DoesNotExist:
          return HttpResponseRedirect(reverse('overseer:index'))
      
      try:
          evt = service.event_set.order_by('-date_created')[0]
      except IndexError:
          return HttpResponseRedirect(service.get_absolute_url())
      
      return event(request, evt.pk)