Add the ability to use HTML5 input types in the comment form.

props jorbin, georgestephanis, obenland. fixes #15080

git-svn-id: http://core.svn.wordpress.org/trunk@23689 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Thirteen: use new HTML5 comment form argument, and adjust CSS selectors a bit. Closes #23702, see #15080.

git-svn-id: http://core.svn.wordpress.org/trunk@23690 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Logged out warnings: clear previous errors when interim_login is set, see #23295

git-svn-id: http://core.svn.wordpress.org/trunk@23691 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Logged out warnings, heartbeat: remove nopriv_autosave as it doubles the functionality of the logged out warnings, move wp_ajax_nopriv_heartbeat() under No-privilege Ajax handlers in ajax-actions.php, see #23295, see #23216

git-svn-id: http://core.svn.wordpress.org/trunk@23692 1a063a9b-81f0-0310-95a4-ce76da25c4cd