缓存页面会出错，比如上传了新的文件，还是无法刷新出来，还是去掉了页面缓存吧，毕竟已经用SESSION做了缓存了

git-svn-id: https://plugins.svn.wordpress.org/wp2pcs/trunk@1043849 b8457f37-d9ea-0310-8a92-e5e31aec5664
修复了48行的小BUG

git-svn-id: https://plugins.svn.wordpress.org/wp2pcs/trunk@1043850 b8457f37-d9ea-0310-8a92-e5e31aec5664