static files redone

core/models.py

@@ -16,7 +16,8 @@ from django.contrib import admin
 from django.contrib.auth.models import User
 from django.contrib.contenttypes.models import ContentType
 from django.conf import settings
-from django.core.urlresolvers import reverse
+
+from django.urls import reverse
 from django.template import Context, loader
 
 import troggle.core.models_survex