Use the fullName() method on the password reminder email

Fixes cases where first and last name don't have valid values as reported on:  https://github.com/TeamMentor/Master/issues/511
Replacing support@teammentor.net with support@securityinnovation.com
Merge pull request #38 from DinisCruz/511_PasswordReminder

Use the fullName() method on the password reminder email