Fix window menu sequence for panels

package.json

@@ -80,7 +80,7 @@
         "c9.ide.ace.split": "#0ae0151c78",
         "c9.ide.ace.statusbar": "#d95be89d53",
         "c9.ide.ace.stripws": "#cf0f42ac59",
-        "c9.ide.behaviors": "#98461756d9",
+        "c9.ide.behaviors": "#c7c987c667",
         "c9.ide.closeconfirmation": "#a28bfd8272",
         "c9.ide.configuration": "#a17478a2e5",
         "c9.ide.dialog.wizard": "#7667ec79a8",

plugins/c9.ide.panels/panel.js

@@ -116,7 +116,7 @@ define(function(require, module, exports) {
                 if (mnuItem)
                     mnuItem.destroy(true, true);
     
-                menus.remove("View/Panels/" + caption);
+                menus.remove("Window/" + caption);
                 
                 panels.unregister(plugin);
             });