fixes and testing under 3.9

git-svn-id: https://plugins.svn.wordpress.org/wp-table-of-paginated-contents/trunk@898235 b8457f37-d9ea-0310-8a92-e5e31aec5664
adding admin style which was left out;

git-svn-id: https://plugins.svn.wordpress.org/wp-table-of-paginated-contents/trunk@898237 b8457f37-d9ea-0310-8a92-e5e31aec5664
readme fix;

git-svn-id: https://plugins.svn.wordpress.org/wp-table-of-paginated-contents/trunk@898239 b8457f37-d9ea-0310-8a92-e5e31aec5664