Adding `author-network` to ITEM::ITEM_FIELDLIST see https://github.com/friendica/friendica/issues/6918#issuecomment-493515358
Adding `author-network` to ITEM::ITEM_FIELDLIST
see https://github.com/friendica/friendica/issues/6918#issuecomment-493515358

annando/friendica,tobiasd/friendica,friendica/friendica,friendica/friendica,tobiasd/friendica,fabrixxm/friendica,tobiasd/friendica,fabrixxm/friendica,annando/friendica,fabrixxm/friendica,annando/friendica,tobiasd/friendica,fabrixxm/friendica,friendica/friendica,friendica/friendica,annando/friendica,friendica/friendica,fabrixxm/friendica,annando/friendica,tobiasd/friendica