Interim-Login form on frontend

Here is a short plugin that adds the interim-login lightbox on every frontend page:

<?php

/*
Plugin Name: Interim Login Everywhere
Version: 1.0.1
Plugin URI: http://nowhere.com
Description: Provide interim login screens on all pages.
Author: S Valentine

*/

function ile_enqueue_scripts() {
    // we only care to add scripts and styles if the user is logged in.
    if ( is_user_logged_in() ) {

        // add javascript file
        wp_register_script( 'wp_auth_check', '/wp-includes/js/wp-auth-check.js' , array('heartbeat'), false, 1);
        wp_localize_script( 'wp_auth_check', 'authcheckL10n', array(
            'beforeunload' => __('Your session has expired. You can log in again from this page or go to the login page.'),
            'interval' => apply_filters( 'wp_auth_check_interval', 3 * MINUTE_IN_SECONDS ), // default interval is 3 minutes
        ) );
        wp_enqueue_script ('wp_auth_check');

        // add css file
        wp_enqueue_style( 'wp_auth_check','/wp-includes/css/wp-auth-check.css', array( 'dashicons' ), NULL, 'all' );

        // add the login html to the page
        add_action( 'wp_print_footer_scripts', 'wp_auth_check_html', 5 );
    }
}
add_action( 'wp_enqueue_scripts', 'ile_enqueue_scripts' );

// make sure the stylesheet appears on the lightboxed login iframe
function ile_enqueue_login_scripts() {
    wp_enqueue_style( 'wp_auth_check','/wp-includes/css/wp-auth-check.css', array( 'dashicons' ), NULL, 'all' );
}
add_action( 'login_enqueue_scripts', 'ile_enqueue_login_scripts' );

?>