title: Django admin DateTimeField auto timezone offset
body: <p>In my settings, I've got all the timezone related stuff turned on:</p>
  
  <ul>
  <li><code>USE_I18N = True</code></li>
  <li><code>USE_L10N = True</code></li>
  <li><code>USE_TZ = True</code></li>
  </ul>
  
  <p>Inside the admin interface, I get a note under the field:</p>
  
  <ul>
  <li>Note: You are 8 hours behind server time.</li>
  </ul>
  
  <p>This is great, but it'd be much nicer if the known offset was applied to the field automatically.  Its difficult for users to calculate a DateTimeField offset in their head.</p>
  
  <p>Is there a simple way to accomplish applying the user's timezone offset to the field automatically?</p>