a litte fix in /admin/addons/index.php.added unregister_Theme to CopyTheme::_doRollback()added CopyTheme::_activateTheme()
added backend functions to copy themes and import htt-template files according to the the new theme fallback functionality
+ move admin/themes/templates/ to admin/skel/themes/htt/! and update class.wb.php, upgrade-script.php