title: How to show related object popup when the user clicks on selected autocomplete field options in Django admin?
body: <p>I want to show the standard related object popup when the user clicks on a selected option in a Django admin autocomplete multi-select field, like it works when clicking the <code>ForeignKey</code> field pencil icon .</p>
  
  <p>The models are as follows:</p>
  
  <pre class="lang-py prettyprint-override"><code>class Author(models.Model):
      name = models.CharField(_('name'), max_length=160)
  
  class Book(models.Model):
      authors = models.ManyToManyField(Author, verbose_name=_('authors'), blank=True)
      ...
  </code></pre>
  
  <p>Is it possible to do this by extending Django admin?</p>