Fix JS regression in the template panel.

It was introduced during last week-end's large renaming.

Author: aaugustin

debug_toolbar/static/debug_toolbar/js/toolbar.template.js

@@ -8,7 +8,7 @@
     var uarr = String.fromCharCode(0x25b6),
         darr = String.fromCharCode(0x25bc);
 
-    $('#djDebugTemplatePanel a.djTemplateShowContext').on('click', function() {
+    $('a.djTemplateShowContext').on('click', function() {
         var arrow = $(this).children('.toggleArrow');
         arrow.html(arrow.html() == uarr ? darr : uarr);
         $(this).parent().next().toggle();