[1.1.X] Fixed #9236 -- Added documentation on the dependencies of the admin.

There are five steps in activating the Django admin site:

    1. Add ``django.contrib.admin`` to your ``INSTALLED_APPS`` setting.

    1. Add :class:``django.contrib.admin`` to your :setting:``INSTALLED_APPS``

       setting.

    2. Determine which of your application's models should be editable in the

    2. Admin has two dependencies - :class:``django.contrib.auth`` and

       :class:``django.contrib.contenttypes``. If these applications are not

       in your :setting:``INSTALLED_APPS`` list, add them.

    3. Determine which of your application's models should be editable in the

       admin interface.

    3. For each of those models, optionally create a ``ModelAdmin`` class that

    4. For each of those models, optionally create a ``ModelAdmin`` class that

       encapsulates the customized admin functionality and options for that

       particular model.

    4. Instantiate an ``AdminSite`` and tell it about each of your models and

    5. Instantiate an ``AdminSite`` and tell it about each of your models and

       ``ModelAdmin`` classes.

    5. Hook the ``AdminSite`` instance into your URLconf.

    6. Hook the ``AdminSite`` instance into your URLconf.

Other topics

------------