Separate Fedora and Hydra rels-ext terms

This moves the Fedora rels-ext terms to a new class with a new url that resolves to their new location. Hydra rels-ext terms are given their own class for clarity.

We should explore opportunities for parity with #616 . @barmintor suggested keeping class names the same in both AF8 and AF9 releases which would make migrating less painful.
Looking at correspondence, it looks like they want to establish a namespace
that can dereference into an ontology doc. Maybe the prudent thing to do is
maintain the two namespaces, since I think you could configure FCR4 with a
membership predicate of FCR3:isMemberOf if you were more concerned with
consistency than dereferenceability.

On Wed, Nov 19, 2014 at 2:00 PM, Adam Wead <notifications@github.com> wrote:

> In lib/active_fedora/rdf/fedora_rels_ext.rb:
>
> > @@ -1,5 +1,5 @@
> >  require 'rdf'
> > -class ActiveFedora::RDF::RelsExt < RDF::StrictVocabulary("http://fedora.info/definitions/v4/rels-ext#")
> > +class ActiveFedora::RDF::FedoraRelsExt < RDF::StrictVocabulary("http://www.fedora.info/definitions/1/0/fedora-relsext-ontology.rdfs#")
>
> @jcoyne <https://github.com/jcoyne> dunno. I was going off of the url.
> Based on conversations in irc between @cbeer <https://github.com/cbeer>
> and @awoods <https://github.com/awoods>, the new location for these is
> http://www.fedora.info/definitions/1/0/fedora-relsext-ontology.rdfs
>
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> <https://github.com/projecthydra/active_fedora/pull/617/files#r20598220>.
>