Changes to Content for What's New tab in Cloud

added the optional property data/featuredItems/items/creationDate to the response with the 200 status

added the optional property data/featuredItems/items/lastUpdatedDate to the response with the 200 status

added the optional property data/featuredItems/items/taxonomy/items/category to the response with the 200 status

added the optional property data/featuredItems/items/taxonomy/items/conceptId to the response with the 200 status

added the optional property data/featuredItems/items/taxonomy/items/title to the response with the 200 status

added the optional property data/items/items/field_creation_date to the response with the 200 status

added the optional property data/items/items/field_last_updated_date to the response with the 200 status

endpoint added