IntegrityError when registering with existing email address

[Briehan Lombaard]

When I try to register with an email address that already exists I get the following IntegrityError: column email is not unique. I'm assuming we're just getting the default database error which we're not handling at the moment.

To fix this we can add a clean_email function on the UserForm that does a lookup for the given email address and then raises a ValidatonError with the appropriate error message if it already exists.

[Briehan Lombaard]

Solved the IntegrityError when a duplicate email is entered.

Fixes #2

→ <<cset 2e69169c6ab5>>