VbzCart/tables/cat pages

About

 * Purpose: This turned out to be the only non-klugey way to translate between requested URL and which page to display. It's also the data-driven equivalent of the old static-page-generation system, upon which the URL scheme is still based – so it's inherently less likely to result in URL-decoding anomalies. I think.
 * Built by:

SQL
DROP TABLE IF EXISTS `cat_pages`; CREATE TABLE `cat_pages` ( `AB` varchar(31) NOT NULL COMMENT "Type+ID_Row: unique identifier",  `Path` varchar(63) NOT NULL COMMENT 'URI of page',  `ID_Row` INT NOT NULL COMMENT 'ID of row from appropriate table',  `Type` CHAR NOT NULL COMMENT 'type of page: S=supplier, D=dept, T=title, I=image',  PRIMARY KEY(`AB`),  UNIQUE KEY(`Path`) );