changing the marshaller to use Vlads
made code review changes started working on abstract restful controller
Merge branches 'develop' and 'develop' of github.com:MetadataRegistry/ModelCataloguePlugin into develop

Conflicts:
	ModelCatalogueCorePlugin/grails-app/controllers/uk/co/mc/core/DataElementController.groovy
	ModelCatalogueCorePlugin/test/unit/uk/co/mc/core/DataElementControllerSpec.groovy
finishing abstract restful controller for catalogue element
Merge branch 'develop' of github.com:MetadataRegistry/ModelCataloguePlugin into develop