Link the version in the footer to the changelog
</p>
<p>
- <small>{% trans 'Version' %} {% readthedocs_version %}</small>
+ <small>{% trans 'Version' %} <a href="http://docs.readthedocs.io/en/latest/changelog.html">{% readthedocs_version %}</a></small>
</p>
</div>
