Switch to side-by-side view

--- a/Allura/allura/templates/repo/diff.html
+++ b/Allura/allura/templates/repo/diff.html
@@ -20,7 +20,7 @@
   {% endif %}
   {% if a.has_html_view and b.has_html_view %}
   <div class="clip grid-19">
-    <h3><span class="ico-l"><b data-icon="{{g.icons['table'].char}}" class="ico {{g.icons['table'].css}}"></b> {{h.really_unicode(a.filename) or '&nbsp;'}}</span></h3>
+    <h3><span class="ico-l"><b data-icon="{{g.icons['table'].char}}" class="ico {{g.icons['table'].css}}"></b> {{h.really_unicode(a.filename) or h.html.literal('&nbsp;')}}</span></h3>
     {{g.highlight(diff, lexer='diff')}}
   </div>
   {% endif %}