A user can now add another user to a location

* i was able to generate a random password for the new user
* for now that password is displayed in the terminal via a dispaly method
* the password will soon be emailed to the user
@tabfugnic well this is just for testing purposes so I know what the password is, that way I can make sure I can log in as a user. eventually this method would become def mail_user_login_info and it would email them their password or something along those lines.