All Sites: Simplify fallback loading of jQuery

Closes gh-328

Author: arthurvr

themes/jquery/header.php

@@ -29,7 +29,7 @@
 	<script src="<?php echo get_template_directory_uri(); ?>/js/modernizr.custom.2.6.2.min.js"></script>
 
 	<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
-	<script>window.jQuery || document.write(unescape('%3Cscript src="<?php echo get_template_directory_uri(); ?>/js/jquery-1.9.1.min.js"%3E%3C/script%3E'))</script>
+	<script>window.jQuery || document.write('<script src="<?php echo get_template_directory_uri(); ?>/js/jquery-1.9.1.min.js"><\/script>')</script>
 
 	<script src="<?php echo get_template_directory_uri(); ?>/js/plugins.js"></script>
 	<script src="<?php echo get_template_directory_uri(); ?>/js/main.js"></script>