Corrected XMPP transport to correctly send a JSON message
Corrected XMPP transport to correctly send a JSON message

Added room presence handling.
Skeleton seems OK
librallu/cohorte-herald,librallu/cohorte-herald,librallu/cohorte-herald,isandlaTech/cohorte-herald,gattazr/cohorte-herald,ahmadshahwan/cohorte-herald,gattazr/cohorte-herald,ahmadshahwan/cohorte-herald,ahmadshahwan/cohorte-herald,isandlaTech/cohorte-herald,isandlaTech/cohorte-herald,gattazr/cohorte-herald