OZF-248: Listing Input Representations
Merge branch 'ListingRepresentation'

Conflicts:
	grails-app/domain/marketplace/Type.groovy
	grails-app/resources/marketplace/rest/resource/ListingResource.groovy
	src/groovy/marketplace/rest/representation/out/CategoryRepresentation.groovy
	test/unit/marketplace/TypeTests.groovy
	test/unit/marketplace/rest/service/ListingRestServiceUnitTest.groovy