Cache (Decrease loading time) + Upgrading to 1.4 Prestashop

Hello Project has 2 areas : 1. 1st fixing a bug due to cache folder erasing (pictures, and pages are not shown anymore) . The site need to have a cache, so that loading time is decreasing . 2. Site to be upgraded to prestashop 1.4 (from prestashop 1.3) Some features are specific to this store : a> categories pictures to be stored as product pictures are now (under folders : exple : picture 1234, is under folder /1, subfolder/2 subsubfolder/3 subsubsubfolder/4 . b> cron to copy product from a site to another site c> importing database for products from a> has not been done yet for categories, (but already done for product , so exactly the same writing code) b>c> Already in place Website : [login to view URL] Other projects following if this project is well conducted , Good luck 88 Sof