Check the correct permission for private query vars

git-svn-id: http://gsoc.svn.wordpress.org/2013/rmccue/trunk@2082 f69abe3c-2ee2-4550-9a6d-17bd458115be
Add better pagination tools

See #266, #267, #268

git-svn-id: http://gsoc.svn.wordpress.org/2013/rmccue/trunk@2083 f69abe3c-2ee2-4550-9a6d-17bd458115be
Allow always passing in posts_per_page

See #266

git-svn-id: http://gsoc.svn.wordpress.org/2013/rmccue/trunk@2084 f69abe3c-2ee2-4550-9a6d-17bd458115be