LPS-34967 Move remaining customization parameters to DDMDisplay

Hey Marcellus,

This is the last set of commits for DDMDisplay. As we discussed, the goal is to prevent hardcoded validations based in portletId from the DDM code as well as to remove unnecessary params from the request. I've sent you all the remaining changes in just one PR so you have the whole picture, but you might decide to review/push them forward individually.

Regards