Layout fixes within LoginActivity
Implemented login
Moved handling the UserInputRequired to the AuthenticationActivity
Moved GoogleAuthenticationActivity logic to LoginActivity
Updates a loginStarted state
Extracted onUserInputRequired and onPostExecute methods in the LoginActivity
Relies on the mLoginInProgress state
Added the hasRequestedUserInput state, and now requests it only once in the login process
Stopped using deprecated method
Extracted showProgressDialog method
Don't show the progress dialog when returning from the user input screen
Validates that the account has any appengine apps
Fixed toasts showing up
Removed the deprecated GoogleAuthenticationActivity