emaillogin.pt: change 'li' to 'ol'.

Apparently 'li' is not shown under each other here, but 'ol' is.
Removed double space in use_email_as_login_description.
Avoid extra acquisition step: self.context is already site_properties.
Preparing release 2.3.4
Back to development: 2.3.5
add member fields tab
add member fields tab