Initial migration to new session based auth system with AllAuth

backend/server/users/adapters.py

@@ -0,0 +1,10 @@
+from allauth.account.adapter import DefaultAccountAdapter
+from django.conf import settings
+
+class NoNewUsersAccountAdapter(DefaultAccountAdapter):
+    """
+    Disable new user registration.
+    """
+    def is_open_for_signup(self, request):
+        is_disabled = getattr(settings, 'DISABLE_REGISTRATION', False)
+        return not is_disabled