[bugfix] Make sure that Cardinality#toString() handles all cases
[bugfix] Make sure that Cardinality#toString() handles all cases

windauer/exist,wolfgangmm/exist,dizzzz/exist,eXist-db/exist,olvidalo/exist,hungerburg/exist,adamretter/exist,wolfgangmm/exist,hungerburg/exist,windauer/exist,dizzzz/exist,wolfgangmm/exist,eXist-db/exist,windauer/exist,adamretter/exist,eXist-db/exist,lcahlander/exist,olvidalo/exist,lcahlander/exist,adamretter/exist,dizzzz/exist,dizzzz/exist,adamretter/exist,eXist-db/exist,windauer/exist,dizzzz/exist,olvidalo/exist,lcahlander/exist,ambs/exist,adamretter/exist,ambs/exist,wolfgangmm/exist,hungerburg/exist,eXist-db/exist,hungerburg/exist,lcahlander/exist,ambs/exist,eXist-db/exist,lcahlander/exist,ambs/exist,adamretter/exist,wolfgangmm/exist,windauer/exist,olvidalo/exist,windauer/exist,lcahlander/exist,ambs/exist,dizzzz/exist,wolfgangmm/exist,olvidalo/exist,hungerburg/exist,ambs/exist