fixed reopened subtask EXT-2265  IM unread messages counter should not be increased for system messages (comming from "Second Life", zero uuid)
fixed reopened subtask EXT-2265  IM unread messages counter should not be increased for system messages (comming from "Second Life", zero uuid)

now not counting messages with from = "Second Life" and from_id = receiver's uuid

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm