Merge branch '1219-users-without-person-linked-can-t-properly-use-frontend' into 'master'

Resolve "Users without person linked can't properly use frontend"

Closes #1219

See merge request !1747

aleksis/core/schema/person.py

@@ -74,6 +74,8 @@ class PersonType(PermissionsTypeMixin, DjangoFilterMixin, DjangoObjectType):
         ]
         filterset_class = PersonFilter
 
+    id = graphene.ID(required=False)
+
     full_name = graphene.String()
     username = graphene.String()
     userid = graphene.ID()