Spike to verify that Smart Folders work as expected with the API

As a developer using the REST API I want to use the Smart Folders feature of the repository and have a way to distinguish smart folders from "normal" folders so my client can behave appropriately.

Acceptance Criteria

• All endpoints of the /nodes API have been tested against a repository with Smart Folders enabled and several smart folders configured using the various configuration options defined here: http://docs.alfresco.com/community/concepts/sf-intro.html
• The API provides a way to determine which folders are "smart"

NOTE: This is a manual exploratory story to determine what, if anything, we need to do in the API to support smart folders.

Please add the tests that were carried out as a comment on this issue.