.grepignore
FormValidationError: tidying
RegistrationForm: authenticate the new user after registration
RegistrationPage: bind to form’s event before submitting it

It reads more naturally this way.
UserService: isCurrentlyAuthenticated()
Georgia

I’m having Internet connection issues right now, and webfonts prevent me
from doing progress.

Georgia is good enough. I think it may even suit better the audience.
RegistrationPage: if authenticated replace the form with a message about that
UserService: unauthenticateCurrentUser