Fix missing modification for "panel_main" to "back_main"

app/assets/javascripts/side_bar_history.js

@@ -1,5 +1,5 @@
 $(function () { 
-  $('#back_sidebar a, #panel_main a.nav').live('click',  
+  $('#back_sidebar a, #back_main a.nav').live('click',  
     function () {  
       $.getScript(this.href);
 			history.pushState(null, document.title, this.href);
@@ -8,7 +8,7 @@ $(function () {
     }  
   );
 
-  $('#panel_main a.reload').live('click',
+  $('#back_main a.reload').live('click',
     function () { 
       $.getScript(this.href);
 			history.replaceState(null, document.title, this.href);