Add UK Counties

Added Uk Counties for users.
County lists sourced from [UK Counties sql script for RoyalMail - Version: 1.1](http://www.zen-cart.com/downloads.php?do=file&id=193) and [List of UK counties in SQL & CSV format] (http://blog.acmultimedia.co.uk/2007/09/list-of-uk-counties-in-sql-csv-format/).
Hope I've not missed any off or got any wrong ;)