EDIT

• extracted deepDelete tests to own java class
  • reduced exception logged in DeleteResult

add original label info to specimen facade #4218, #4565

• fully implemented deep delete (child derivates)
  • added tests

added unit test for derived unit facade with parent but no field unit #4532

• implemented isDeletable() and delete()
  • fixed test XML files and tests

fix Occurrence test

• change visibility of createTestDataSet to public

• organized imports

minor

minor