upgrade to 4.0

git-svn-id: https://plugins.svn.wordpress.org/zstore-manager-basic/trunk@984463 b8457f37-d9ea-0310-8a92-e5e31aec5664
upgrade to 4.0

git-svn-id: https://plugins.svn.wordpress.org/zstore-manager-basic/trunk@984464 b8457f37-d9ea-0310-8a92-e5e31aec5664