Merge 0.2.6 Django 2.0 updates

helpdesk/views/staff.py

@@ -12,7 +12,7 @@ from datetime import datetime, timedelta
 from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.contrib.auth.decorators import user_passes_test
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.core.exceptions import ValidationError, PermissionDenied
 from django.db import connection
 from django.db.models import Q