logo fix

git-svn-id: https://plugins.svn.wordpress.org/sisow-for-woocommerce/trunk@1018700 b8457f37-d9ea-0310-8a92-e5e31aec5664
add giftcard

git-svn-id: https://plugins.svn.wordpress.org/sisow-for-woocommerce/trunk@1018702 b8457f37-d9ea-0310-8a92-e5e31aec5664