dont make link if there is no file in biblio

itf/templates/modules/festival/documentsubject.html

@@ -1,5 +1,11 @@
 {% for d in documents %}
-    <div class="orangeInnerRight"><a href="{{ d.file }} target="_blank"> {{ d.title }}</a></div>
+    <div class="orangeInnerRight">
+        {% if d.file %}
+            <a href="{{ d.file }} target="_blank"> {{ d.title }}</a>
+        {% else %}
+            {{ d.title }}
+        {% endif %}
+    </div>
     {{ d.intro|safe }}
     <br />
 {% endfor %}