add backup

git-svn-id: https://plugins.svn.wordpress.org/wpmanagerpro/trunk@759898 b8457f37-d9ea-0310-8a92-e5e31aec5664
add backups

git-svn-id: https://plugins.svn.wordpress.org/wpmanagerpro/trunk@759899 b8457f37-d9ea-0310-8a92-e5e31aec5664
syntax fix

git-svn-id: https://plugins.svn.wordpress.org/wpmanagerpro/trunk@759900 b8457f37-d9ea-0310-8a92-e5e31aec5664
bug fix

git-svn-id: https://plugins.svn.wordpress.org/wpmanagerpro/trunk@759901 b8457f37-d9ea-0310-8a92-e5e31aec5664