Have local panels for customize dialog come from client again (instead of remote source). Bug 30872. r=mcafee a=jar.

xpfe/components/sidebar/resources/sidebarOverlay.js

@@ -90,6 +90,7 @@ function sidebar_overlay_init() {
   sidebarObj.resource = 'urn:sidebar:current-panel-list';
   
   sidebarObj.master_datasources = get_remote_datasource_url();
+  sidebarObj.master_datasources += " chrome://sidebar/content/local-panels.rdf";
   sidebarObj.master_resource = 'urn:sidebar:master-panel-list';
   sidebarObj.component = document.location.href;