Switch to side-by-side view

--- a/Allura/allura/lib/widgets/templates/thread.html
+++ b/Allura/allura/lib/widgets/templates/thread.html
@@ -26,7 +26,7 @@
             </div>
           {% endif %}
         </div>
-        <div style="clear:both"/>
+        <div style="clear:both"></div>
         {% if limit %}
         <div>
           {{widgets.page_list.display(limit=limit, page=page, count=count)}}