FEATURE: WebTrends Ad Director Beacon Tracking

Order merge code to support WebTrends Ad Director Beacon tracking. 

A new merge code has been added to orders, ##ORDERITEMLISTWEBTRENDS##

The format of the tracking script is as follows:

<script src="//rd.clickshift.com/js/convert.js"></script>
<script>f2convert(your_assigned_client_id, multiple_product_info, order_related_info,
new_order, clickshift_data, attribution);</script>

When placed in the Place Order scripts store setting:

<script src="http://rd.clickshift.com/js/convert.js"></script>
<script>
f2convert(1111, '##ORDERITEMLISTWEBTRENDS##', '##ORDERID##', 1,
'clickshiftdata', 'attribution');
</script>

The actual generated script:

<script src="http://rd.clickshift.com/js/convert.js"></script>
<script>
f2convert(1111, 'ItemNr21231231#400*3,564564B#1000*2', '100531', 1,
'clickshiftdata', 'abcdefg');
</script>