Fixed back button working on emulator but not on my phone. Send user to
registration screen if both email/password fields are blank OR if email
is given and hasn't been registered and password field is blank.
Merge branch 'master' of https://github.com/zwaldowski/ProjectTeamRocket.git
Fixed back button working on emulator but not on my phone. Sends user to
registration screen if they enter no email/password OR if they enter an
unregistered email with no password.