Implement api/direct_messages/destroy
Implement api/direct_messages/destroy

Twitter compliant call replaces api/friendica/direct_messages_delete;
JSON return expected by Twitter API and parameter include_entities not
yet implemented

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