[development] Sign-up procedure

[Steve Ringwood]

Unless I missed something your proposal does not allow for the case
where I want to allow people to register and login in at the same time
but with restricted privilages (determined by role initially assigned)
and then when they verify there email (using the link in the email)
granting them complete privilages.

Currently with core plus logintobaggon I can implement registration in
a number of ways.  Your proposal seems to narrow down the set of choices
and I do not feel it belongs in core

Steve Ringwood