Post in Joining a Group and Registering an Account Using the Web

I have made some minor tweaks to joining a group and registering an account
using the Web:
  * I have improved the wording,
  * I have improved the destination page, and
  * I have over-determined the user (more).

The most visible change is to the wording. Registration is now referred to as
“sign up”. This is on Dan's suggestion, as he noticed that “sign up” was the
more common term. I personally prefer the Latinate “register”, so I will still
refer to the registration system, but we do not have to inflict my tastes on
the rest of the World ☺ (Well, not always!)

The destination page for registration has also been improved. Previously, once
the user finished registration, he or she would end up on the site homepage,
where a welcome message may be displayed. Now, the user will end up on the
group-homepage, where a welcome message may be displayed. This is done by
passing the registration system the URL of the destination page. The user is
sent through the system, and ends up at the destination page once he or she has
finished registering. The login system was the first to do this, thanks to a
tweak by Richard, and I blatantly copied Richard's work.

Finally, I have over determined the user a little more during registration,
specifically with email-address verification. I was thinking about verification
as Steve mentioned it
  http://groupserver.org/r/topic/3LBWeQCUs5UcE3jrK7lxFn
Now the email-address verification page contains
  * The site title,
  * The heading “Address Verified”, and
  * The text “The address <email obscured>le  has been verified. You can use this
    address to send messages to your groups, receive messages from groups, and
    log in to this site.” Substitute the address and site-name as you
    see fit ☺
The email-address verification page does not contain a link. Any link. No links
to profiles, login, logout, sign up, or sign off; gone are group pages, groups
page, groupserver, groupsense, group love, groupies, and group hug; absent are
homepages, hot pages, help, hemp and hell. I toyed with putting a Close button
on the page, but JavaScript can only close a page that JavaScript opens (for
security) so I have to rely on the user knowing how to close a window. Sad but
true.