title: Django admin get_FOO_display
body: <p>I have model like this:</p>
  
  <pre><code>class M(models.Model):
      CHOICES = (('A', 'Accepted'), ('R', 'Rejected'))
  
      status = model.CharField(max_length=1, choices=CHOICES)
  </code></pre>
  
  <p>I register this model in admin by this way:</p>
  
  <pre><code>class MAdmin(admin.ModelAdmin):
       list_display = ('get_status_display', )
  </code></pre>
  
  <p>But I see field name <em>curried</em> in status column.</p>
  
  <p>How I can give normal name <em>Status</em> to column or I make something wrong?</p>
  
  <p>And can I sort by this field?</p>