Fixed issue with Visa Checkout express option

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-fat-zebra-gateway/trunk@1024860 b8457f37-d9ea-0310-8a92-e5e31aec5664
Tweak setting type to textbox

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-fat-zebra-gateway/trunk@1024862 b8457f37-d9ea-0310-8a92-e5e31aec5664