#507 (bug) - CMS images should not be resized on initial upload if they
match the required dimensions
#496 (new feature) - Add facility to specify more than one container
when designing page layouts
Requires following SQL update (site_manager module):
ALTER TABLE `site_layoutSite`
CHANGE COLUMN `rowConfig` `structure` LONGTEXT NULL DEFAULT NULL;
UPDATE `site_layoutSite` SET `structure`=CONCAT('[{"rows":',
`structure`, '}]');
TRUNCATE `site_cache`;
TRUNCATE `site_cachePageItem`;
TRUNCATE `site_cacheTag`;