and added ItemModelData (based on morm::ModelData) class which has 'prepare_unique_url' field,
an object of this class is passed to update(), insert() and save() methods
fixed: Dirs::CheckRootDir(): update should update childs too (privileges)
WIP: #4
new winix function: "seo", it allowes to edit subject, description and keywords for a page
description and keywords are stored in meta
git-svn-id: svn://ttmath.org/publicrep/winix/trunk@1179 e52654a7-88a9-db11-a3e9-0013d4bc506e