Set browserid to create user

Browserid now creates user upon login without a previous user created
using the desired e-mail.

Signed-off-by: Carlos Oliveira <carlospecter@gmail.com>
Reimplemented way to create user through browserid

Added more fields to create user with custom model

Signed-off-by: Carlos Oliveira <carlospecter@gmail.com>
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Set a flag to update or not user's register

Set a boolean field to tell whether a user needs to update its register
upon registering/logging in through browserid

Signed-off-by: Carlos Oliveira <carlospecter@gmail.com>