title: CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
body: <p>I'm using Django 1.6.5 with the setting:</p>
  <pre><code>DEBUG = True
  </code></pre>
  <p>When I change to <code>DEBUG = False</code> and run <code>manage.py runserver</code>, I get the following error:</p>
  <pre class="lang-none prettyprint-override"><code>CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
  </code></pre>
  <p>I get the same error with the following setting:</p>
  <pre><code>ALLOWED_HOSTS = ['127.0.0.1', 'localhost']
  </code></pre>
  <p>How can I fix this?</p>