Removing of unused parameter white list
Removing of unused parameter white list

Cleaning up of the build controller, by removing the list of the allowed
parameters for the previous version of the monolithic Application model.

Also making the controller conform to the RuboCop's metrics, which were
intentionally disabled for the refactoring.

ministryofjustice/fr-staffapp,ministryofjustice/fr-staffapp,ministryofjustice/fr-staffapp,ministryofjustice/fr-staffapp