Templates: Add block for footer content info (#896)

Allows users to expand this area to add their own content

Author: Blendify

sphinx_rtd_theme/footer.html

@@ -1,18 +1,19 @@
 <footer>
-  {% if (theme_prev_next_buttons_location == 'bottom' or theme_prev_next_buttons_location == 'both') and (next or prev) %}
+  {%- if (theme_prev_next_buttons_location == 'bottom' or theme_prev_next_buttons_location == 'both') and (next or prev) %}
     <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
-      {% if next %}
+      {%- if next %}
         <a href="{{ next.link|e }}" class="btn btn-neutral float-right" title="{{ next.title|striptags|e }}" accesskey="n" rel="next">{{ _('Next') }} <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
-      {% endif %}
-      {% if prev %}
+      {%- endif %}
+      {%- if prev %}
         <a href="{{ prev.link|e }}" class="btn btn-neutral float-left" title="{{ prev.title|striptags|e }}" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> {{ _('Previous') }}</a>
-      {% endif %}
+      {%- endif %}
     </div>
-  {% endif %}
+  {%- endif %}
 
   <hr/>
 
   <div role="contentinfo">
+  {%- block contentinfo %}
     <p>
     {%- if show_copyright %}
       {%- if hasdoc('copyright') %}
@@ -41,6 +42,7 @@
     {%- endif %}
 
     </p>
+  {%- endblock %}
   </div>
 
   {%- if show_sphinx %}
@@ -57,4 +59,3 @@
   {%- block extrafooter %} {% endblock %}
 
 </footer>
-