web(ui): hide empty navbar menu and prevent mobile wrap

Author: arvindm84

src/generators/web/ui/index.css

@@ -85,3 +85,11 @@ main {
     }
   }
 }
+
+.navItems:empty {
+  display: none;
+}
+
+div[class$="_navItems"]:empty {
+  display: none;
+}