EDIT

implement another possibility of gathering agent text in abcd (agentText)

abcd import: avoid potential NPE and emtpy authors

revert some of the last changes

fix potential NPEs in ABCD import

smaller issues in abcd import

remove default dna source

ref #8631: fix errors in abcd import

fix NPE in abcd import

ref #8533: minor

ref #8533: check for all fields in gatheringEvent whether it is set already