Simplify Customer Portal Configuration

Would be a lot simpler to assign a Profile in Privileges of Customer Portal configuration.

Now is a 3 steps (create profile, role and user) complicated process and doesn't make sense have to create a user with specific permissions to be the portal default.

This user will never be used and if profile could be directly Assignee to privileges would be great and a lot "cleaner"

Also a predefined profile for portal during installation should make more sense.