'Register' link should be hidden if you not allowed to register

[dread]

I have just deny visitors the create-user permission:
sudo -u ckanstd paster --plugin=ckan roles deny reader create-user -c /etc/ckan/std/std.ini
sudo -u ckanstd paster --plugin=ckan roles deny anon_editor create-user -c /etc/ckan/std/std.ini

and after restarting, the register link is *not* hidden, but now when you access the register page, it shows you this message "Unauthorized to create a user" (when not logged in). But anyway that is an improvement.