Merge pull request #4217 from mostaszewski/4170-link_the_version_in_the_footer_to_the_changelog

#4170 - Link the version in the footer to the changelog

Author: humitos

readthedocs/templates/base.html

@@ -204,7 +204,7 @@ <h4>{% trans 'Business Info' %}</h4>
             </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>