Revert "Implements the 'Implicit Grant'. A typical call looks like /oauth2/authorize/?client_id=an_existing_client_id=token&redirect_uri=the_client_redirect_uri"

This reverts commit 728322173d3718e7cbbd8e216fbc22500d737b61.
Revert "Revert "Implements the 'Implicit Grant'. A typical call looks like /oauth2/authorize/?client_id=an_existing_client_id=token&redirect_uri=the_client_redirect_uri""

This reverts commit b63b27be60d6851a862051ed5b278642d57b721a.
Revert the implicit grant with (some corrections)
rollback