Fix sponsors variable name in template

templates/base.html

@@ -121,7 +121,7 @@
 			    {{ SPONSORSTEXTS[DEFAULT_LANG] }}
 			{% endif %}
 		    </p>
-                    {% for alt, image, url, before in SPONSOR_LOGOS %}
+                    {% for alt, image, url, before in SPONSORS %}
 		        {% if before >= TODAY %}
                             <a href="{{ url }}"><img src="{{ image }}" href="{{ url }}" alt="{{ alt }}" title="{{ alt }}" class="sponsorslogo" /></a>
 		        {% endif %}