Added the ability to specify default values for the users First Name, Last Name and Email. Also enabled the fields on the profile page so that users can set their name and email as these values cannot be obtained from the digest file. Though this would be useful as when you get emails from reviewboard the from field is blank and the name is not populated either.

Tested editing users profile settings and tested logging in with a new user and the defaults were applied. Also tested this on the dev server at work. All works fine.