Set the authorized callback onto the grant not the server.

Signed-off-by: Jason Lewis <jason.lewis1991@gmail.com>
Updating to match latest changes to dingo/oauth2-server.

Signed-off-by: Jason Lewis <jason.lewis1991@gmail.com>
Refactoring commands and adding New and Delete commands.

Signed-off-by: Jason Lewis <jason.lewis1991@gmail.com>