Minor bug fixes

git-svn-id: https://plugins.svn.wordpress.org/wpec-facebook-shop/trunk@1056713 b8457f37-d9ea-0310-8a92-e5e31aec5664
Minor bug fixes

git-svn-id: https://plugins.svn.wordpress.org/wpec-facebook-shop/trunk@1056715 b8457f37-d9ea-0310-8a92-e5e31aec5664