Plugin-publish is a project mainly written in PHP and JAVASCRIPT, it's free.
DokuWiki plugin to create an Approved/Draft system (github download mirror)
You can allow approvers to approve with no changes by editing inc/common.php:933 to remove: // ignore if no changes were made if($text == rawWiki($id,'')){ return; }
Or, you can change it to: global $_POST; // ignore if no changes were made if(!$POST['approved'] && $text == rawWiki($id,'')){ return; }