! change mysql_esc_string to WbDatabase::getInstance()->escapeStrinng()
fixed a little problem with chmod()
a litte fix in /admin/addons/index.php.added unregister_Theme to CopyTheme::_doRollback()added CopyTheme::_activateTheme()
prevent from empty theme-name in CopyTheme::_SanitizeNewName()
added backend functions to copy themes and import htt-template files according to the the new theme fallback functionality