This allows blueslip to catch exceptions from the event handlers on
these elements in addition to the other benefits that not using
inline handlers provide.
(imported from commit 2bdcb2496c6c08fa7228a20ce6164b527cf64e41)
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)