title: heroku: relation "auth_group" does not exist
body: <p>I'm facing problem while doing syncdb on heroku.
  I have a custom user model and when I try to sync,heroku gives this error.</p>
  
  <pre><code>django.db.utils.ProgrammingError: relation "auth_group" does not exist
  </code></pre>
  
  <p>I tried python manage.py makemigrations but nothing is getting resolved.
  Help me find the solution.</p>