Add IT for preserving properties on federated filesystem moves

Resolves: https://www.pivotaltracker.com/story/show/70990730
Redirect to external content on GET of fcr:content

- Update IT to use federated datastream source for external content

Resolves: https://www.pivotaltracker.com/story/show/74627750
Nonfunctional code cleanup
Merge pull request #466 from ajs6f/CodeCleanup4Eva

Nonfunctional code cleanup
RDF'ed serialization