title: Disabling the 'Save' and 'Save and continue editing' buttons for a model in the Django admin
body: <p>I'm writing the admin view for the model in my Django application. This admin view should a be a read-only view. I don't want anyone creating or deleting records either. I've managed to prevent user's from creating and deleting records. Here's my model's admin class:</p>
  
  <pre><code>class EmailAdmin(admin.ModelAdmin):
      """
      Admin part for managing the the Email model
      """
      list_display = ['to', 'subject', 'ok',]
      list_filter = ['ok']
      readonly_fields = ['when', 'to', 'subject', 'body', 'ok']
      search_fields = ['subject', 'body', 'to']
  
      def has_delete_permission(self, request, obj=None):
          return False
  
      def has_add_permission(self, request):
          return False
  </code></pre>
  
  <p>When the user clicks on a record in the admin, it takes him to the detail view where he can't edit anything as all the fields are read-only but he continues to see two buttons on the lower-right hand side of the admin console that read 'Save' and 'Save and continue editing'. Is it possible to remove these links? I'd like to have a total read-only admin view.</p>
  
  <p>Thanks.</p>