This allows users on signup-eligible domains to sign up for Humbug using
Google Apps.
As part of this, we wrap the openid done view in our own code in order to
handle the "Unknown user" error. Therein, we create a PreregistrationUser
and then shunt the user through the rest of the confirmation process, pre-
filling in their name.
(imported from commit 066d9a1021384a6da2662352e62a701451bd6f44)
We add a few templates for django-confirmation. We define a
"PreregistrationForm" which is validated by accounts_home, which then
generates a confirmation object and emails the user. This required creating
a new table for a PreregistrationUser with an email and status (confirmed)
field.
The register function now no longer accepts a "email" field in the form
and deals only with confirmation IDs to determine the email used to sign
up a user.
(imported from commit 4fcde04530aa7ad4de84579668daee7290b424ac)