Minimal working version

* Upgrade dependencies
* Fix ugettext
* Fix bad urls

pedagogy/tests.py

@@ -25,7 +25,7 @@
 from django.conf import settings
 from django.test import TestCase
 from django.urls import reverse
-from django.utils.translation import ugettext_lazy as _
+from django.utils.translation import gettext_lazy as _
 from django.core.management import call_command
 
 from core.models import User, Notification