Handle rel= for sponsors too

Author: williamdes

pmaweb/templates/_sponsor.html

@@ -4,5 +4,5 @@
   <a href="{{ sponsor.url }}"{% if sponsor.rel %} rel="{{ sponsor.rel }}"{% endif %}><img src="{% static 'images/' %}{{ sponsor.logo }}" alt="{{ sponsor.name }}" /></a>
 </div>
 {% else %}
-<a href="{{ sponsor.url }}">{{ sponsor.name }}</a>
+ <a href="{{ sponsor.url }}"{% if sponsor.rel %} rel="{{ sponsor.rel }}"{% endif %}>{{ sponsor.name }}</a>
 {% endif %}