[Fixed] ignoring a player now ignores duel requests, trade requests, and
group invitations from that player - mantis 4820, 4821

Change-Id: Id0e1074877eb4a89d6f8bfe4282b42a194bb1482
Merge "[Fixed] ignoring a player now ignores duel requests, trade requests, and group invitations from that player - mantis 4820, 4821" into unstable