Merge pull request #897 from mgeier/commit-and-date

Footer: show both "commit" and "last_updated" (if available)

sphinx_rtd_theme/footer.html

@@ -36,7 +36,8 @@
         {# Translators: the phrase "revision" comes from Git, referring to a commit #}
         {% trans %}Revision{% endtrans %} <code>{{ commit }}</code>.
       </span>
-    {%- elif last_updated %}
+    {%- endif %}
+    {%- if last_updated %}
       <span class="lastupdated">
         {% trans last_updated=last_updated|e %}Last updated on {{ last_updated }}.{% endtrans %}
       </span>