How do I override an admin template (e.g. admin/index.html) while at the same time extending it (see https://docs.djangoproject.com/en/dev/ref/contrib/admin/#overriding-vs-r
I agree with Chris Pratt. But I think it's better to create the symlink to original Django folder where the admin templates place in:
ln -s /usr/local/lib/python2.7/dist-packages/django/contrib/admin/templates/admin/ templates/django_admin
and as you can see it depends on python version and the folder where the Django installed. So in future or on a production server you might need to change the path.