dating extraction, extractChronOntologyIds: extract ids as nested array
follow up to #21
- on function extracChronOntologyIds in datingExtraction.js
- bundle ids from a common entry into a nested array
- is: ids from all entries of the dating section are extracted into a flat array; return value is a flat array
- should be: ids from the same entry should be bundled into the same subarray; return value shoud be nested array
- include temporary fixes for consuming functions