Allows for assigning compositions to doc types that are being created.
Removes unused getAssignedListViewDataType from contentTypeResource.
Removes unused getPropertyTypeScaffold from memberTypeResource.
Removes unused performContainerDelete from memberTypeResource - since member types don't support folders.
Ensures correct security for the ContentTypeController.GetAllPropertyTypeAliases and ContentTypeController.GetAvailableCompositeContentTypes.
Removes unused ContentTypeControllerBase.GetAssignedListViewDataType, this is no longer used because the list view is configured using the DataTypeController.