Removed deprecated import.

Author: palbee

demo-django/demo/views.py

@@ -1,5 +1,5 @@
 from django.conf import settings
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.http import (HttpResponse, HttpResponseRedirect,
                          HttpResponseServerError)
 from django.shortcuts import render_to_response