Add list_select_related #2
Description
Use a FK field attribute on http://django-admin-cookbook.readthedocs.io/en/latest/calculated_fields.html, eg: self.user.email. This would lead to extra query per object. This can be avoided using list_select_related. Add list_select_related to http://django-admin-cookbook.readthedocs.io/en/latest/optimize_queries.html