Fixing bug with Contenttype returned

Adding named graph on default service

Adding debug option to lodspk.sh
Moved modules to classes/

Also, moved `util/ldspk.sh` to `util/lodspk.sh` for consistency

Service now return 406 if service exists but the content type is not
supported

Fixed use of previously returned values in classModule

Adding new format for ref:Resource

Delete old format

Now looking by type and the special pages are modules.