We now are always careful to provide an e-mail to users in tests. Also,

calls have been updated to use User.objects.create_user over

User.objects.create where appropriate. This was prompted by a change

in Djblets (see https://reviews.reviewboard.org/r/9445/) which started

causing unit test failures due to Users without e-mail addresses

being serialized. So to be extra safe, I've gone in and added e-mail

addresses to all calls that were lacking them.

Ran unit tests.