refactor the name of the argument
added tests to ontology module
Merge branch 'feature/ontology' of https://github.com/ChaoPang/molgenis
Merge branch 'feature/ontology' of https://github.com/ChaoPang/molgenis into feature/ontology
Merge branch 'feature/ontology' of https://github.com/molgenis/molgenis into feature/ontology
Fix unit tests + small fixes
Merge pull request #2028 from bartcharbon/feature/ontology

Feature/ontology fix unit tests
set lookup attribute for tags