* add scripts to check if a user is a person or organisation, and if it's not, to return the url of the object he is
* add WebSite_login page templates : the difference from erp5_web WebSite_login page template is that in case of Document user, he is automatically redirected
on the document after login

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@23637 20353a03-c40f-0410-a6d1-a30d3c3de9de