New menu class that has an entry at the very end, similar to the input
text prefix, that is always available

Change-Id: I03d8f689e37021d3daac6bf34f7d35f0e4d71999
diff --git a/dev/js/spec/menuSpec.js b/dev/js/spec/menuSpec.js
index 22f3c77..c24a75b 100644
--- a/dev/js/spec/menuSpec.js
+++ b/dev/js/spec/menuSpec.js
@@ -380,6 +380,7 @@
         expect(menu.element().nodeName).toEqual('UL');
         expect(menu.element().classList.contains('visible')).toBeFalsy();
         expect(menu.limit()).toEqual(8);
+        expect(menu._notItemElements).toEqual(3);
 
         menu.limit(9);
         expect(menu.limit()).toEqual(9);