EDIT

ref #4866, ref #9228 add references for test

ref #4866, ref #9228 fix test and use referenceDao instead of refService internally

try to fix failing (in suite) test (cont.)

try to fix failing (in suite) test (cont.)

cleanup

try to fix failing (in suite) test

remove some further null values from test data

remove some null values from test data

cleanup

ref #9225 revert direction of TaxonName.nomenclaturalSource -> NomenclaturalSource.sourcedName mapping and some related issues