s/django.core.urlresolvers/django.urls/g

Django 1.10 deprecation fix for Hackathon XIX
Addresses PLAT-1397

lms/djangoapps/dashboard/tests/test_sysadmin.py

@@ -11,7 +11,7 @@ from uuid import uuid4
 
 import mongoengine
 from django.conf import settings
-from django.core.urlresolvers import reverse
+from django.urls import reverse
 from django.test.client import Client
 from django.test.utils import override_settings
 from pytz import UTC