Adds JS integration

[kenorb]

In order to use JavaScript integration, please include the following JavaScript on all pages that are to be protected by the queue:

<script type="text/javascript" src="//static.queue-it.net/script/queueclient.min.js"></script>
<script 
    data-queueit-c="CLIENT_ID" 
    type="text/javascript" 
    src="//static.queue-it.net/script/queueconfigloader.min.js">
</script>

[kenorb]

Implemented.