fix some bugs

git-svn-id: https://plugins.svn.wordpress.org/better-extended-live-archive/trunk@907793 b8457f37-d9ea-0310-8a92-e5e31aec5664
add new classes

git-svn-id: https://plugins.svn.wordpress.org/better-extended-live-archive/trunk@907794 b8457f37-d9ea-0310-8a92-e5e31aec5664