Add two rdf:type : schema:Organization and schema:PostalAddress

* add UUID for OCWC itself
* add membership to OCWC for every oer-organization resource
* uncomment some mapping for possible later processing
Update sample queries for new organization type (see #5 and #50)
Merge pull request #50 from hbz/issue-missing-types

Add two rdf:type : schema:Organization and schema:PostalAddress