Add the jQuery UI Touch Punch plugin to handle dragging on mobile devices, props georgestephanis, see #20014

git-svn-id: https://develop.svn.wordpress.org/trunk@20433 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/nav-menus.php

@@ -35,6 +35,9 @@ wp_enqueue_script( 'common' );
 wp_enqueue_script( 'wp-lists' );
 wp_enqueue_script( 'postbox' );
 
+if ( wp_is_mobile() )
+	wp_enqueue_script( 'jquery-touch-punch' );
+
 // Container for any messages displayed to the user
 $messages = array();