Added "causer" and "notification" for the "ping" mechanism
Added "causer" and "notification" for the "ping" mechanism

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