Add NotFoundException for recipients in api_direct_messages_new()
Add NotFoundException for recipients in api_direct_messages_new()

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