Upgrading to 1.4

git-svn-id: https://plugins.svn.wordpress.org/flat-rate-per-countryregion-for-woocommerce/trunk@989068 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixing minor string

git-svn-id: https://plugins.svn.wordpress.org/flat-rate-per-countryregion-for-woocommerce/trunk@989073 b8457f37-d9ea-0310-8a92-e5e31aec5664