jQuery cdn fallback

[firestorm]

some countries don't allow cdn or cdn goes down for some reason, or your working in localhost with no outside connection then fallback should be added to account for this, I've added to my pull request on github the following, which is added to users/includes/header.php.

<pre>

Code:

<!-- jQuery Fallback -->
<script type="text/javascript">
    if (typeof jQuery == 'undefined') {
        document.write(unescape("{3bc1fe685386cc4c3ab89a3f76566d8931e181ad17f08aed9ad73b30bf28114d}3Cscript src='<?=$us_url_root?>users/js/jquery.js' type='text/javascript'{3bc1fe685386cc4c3ab89a3f76566d8931e181ad17f08aed9ad73b30bf28114d}3E{3bc1fe685386cc4c3ab89a3f76566d8931e181ad17f08aed9ad73b30bf28114d}3C/script{3bc1fe685386cc4c3ab89a3f76566d8931e181ad17f08aed9ad73b30bf28114d}3E"));
    }
</script>

</pre>