Group gems in Gemfile
Made Token ploymorphic
Revert "Made Token ploymorphic"

This reverts commit 4474c7113f641c65c03d68b909e395aab278b59c.
Send email about withdraw state to the user when it is in final state
Notify user with email after signed in
Move mailer locales into config/locales/mailer/
Added feature spec for email notification of signin