当还没有授权的时候，提示不能备份和调用

git-svn-id: https://plugins.svn.wordpress.org/wp2pcs/trunk@1043527 b8457f37-d9ea-0310-8a92-e5e31aec5664
修复脚本未加载的bug

git-svn-id: https://plugins.svn.wordpress.org/wp2pcs/trunk@1043529 b8457f37-d9ea-0310-8a92-e5e31aec5664