* GRN2-233: Hiding email in verification link and password reset link
* updating tests
* removing uid from email verificaiton link
* GRN2-233: modifying test cases
* GRN2-233: Removing uid from password reset link
* GRN2-233: Removed email_params and fixed "authenticated?" method
* GRN2-233: Fixed error when trying to sign in unverified
* GRN2-233: Changed how activation tokens are generated