Added support for Admin to request users to sign up with valid emails.
Added migration for this.
Users can manually enter token + email address, or else just visit link that is emailed to them.

Todo: have order messages get sent by email if enabled.
Have order model send emails to user
Add email form to register_no_pin page
Change name on email..
quick test
tweak buyer confirm page..
Fixed buyer page?
This should be it -stopping errors on buyer confirm page if vendors PGP isn't set..
test order email - temporarily disable redirect..
commented wrong change..
undo testing stuff.
Now updates associated with orders will be emailed to the user.
Contents of the message will be sent after PGP encryption is applied (if applicable)
re disable redirect
update accounts_model->get, should obtain 'email_updates' setting
fix typo
not with it tonight... Load email library when required in Order_model
Almost finished support for emails.
Todo:
 - Resend activation links for new users
 - Display currently pending email verifications
Refactored model code. Allowing users to verify email changes while logged in,
so changing returnMessages here.
Bug fix: wrong column name
Allow users to have one pending email change only.
Remove entry for email when not requested.