Update 0.4.7

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-payment-gateway-for-saferpay/trunk@1025748 b8457f37-d9ea-0310-8a92-e5e31aec5664
0.4.7/2

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-payment-gateway-for-saferpay/trunk@1025749 b8457f37-d9ea-0310-8a92-e5e31aec5664
Comments in code

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-payment-gateway-for-saferpay/trunk@1025750 b8457f37-d9ea-0310-8a92-e5e31aec5664
Adjusted version number

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-payment-gateway-for-saferpay/trunk@1025752 b8457f37-d9ea-0310-8a92-e5e31aec5664