Simple extension of Django admin base_template.html so you can change the title displayed on the login and header, as well as adding custom JavaScript and CSS files for extra functionality and styling.

base_site.html

{% extends "admin/base.html" %}
{% load i18n %}

{# Customize the branding in the login form #}
{% block title %}{{ title }} | {% trans 'Site Name Admin' %}{% endblock %}

{% block extrastyle %}
  <link rel="stylesheet" href="{{ STATIC_URL }}css/django-admin-theme.css" media="screen"/>
{% endblock %}

{% block extrahead %}
  <!-- Include extra JavaScript files... -->
{% endblock %}

{% block branding %}
  {# Customize the branding in the header #}
  <h1 id="site-name">{% trans 'Site Name Admin' %}</h1>
{% endblock %}

{% block nav-global %}{% endblock %}