Add a new tab to web_site and web_section  for configure an ecommerce web site. Change the default result for the product listing. Change listbox settings and css for ecommerce mf54.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@27754 20353a03-c40f-0410-a6d1-a30d3c3de9de