STANBOL-537 Updated JSON-LD serializer to support latest spec from Jan 5, 2013. Deactivated Factstore build and integration tests as these are out of date now. Factstore should be moved to contrib anyway, see STANBOL-803

git-svn-id: https://svn.apache.org/repos/asf/stanbol/trunk@1429794 13f79535-47bb-0310-9956-ffa450edef68