// Save reordering from plugin settings page
function psort_save_order() {

    global $mouldings_options;

    $list = $mouldings_options['profile_element_order'];
    $new_order = $_POST['list_items'];
    $new_list = array();

    // update order
    foreach($new_order as $v) {
        if(isset($list[$v])) {
            $new_list[$v] = $list[$v];
        }
    }

    $mouldings_options['profile_element_order'] = $new_list;

    // save the new order
    update_option('mouldings_settings', $mouldings_options);

    die();
}
add_action('wp_ajax_psort_update_order', 'psort_save_order');