
Exercise 4.01: Creating a Super User 
Exercise 4.02: Adding and modifying Users and Groups through the Admin app
Exercise 4.03: Foreign Keys and deletion behavior in the Admin app
Activity 4.01: Customizing the Site Admin *
Customizing the ModelAdmin Classes **
Exercise 4.04: Adding a date list_filter and a date_hierarchy *
The Search Bar, Excluding And Group Fields **
Activity 4.02: Customizing the Model Admins *

* These exercises and activities involve code changes and are included in this
  repository.
** Code from these sections is included in the repository.
