Move responsibility for contentType and fileExtension to Erfurt
Fix #226. Forward Erfurt.
add hide type when using add instance
forward rdfauthor
Merge pull request #310 from AKSW/feature/ntriplesSerializer

Move responsibility for contentType and fileExtension to Erfurt
Forward Erfurt
Add getTitle method to ModelJsonrpcAdapter
Merge OntoWiki 'upstream/develop' into develop