Dungeon Finder: Fix Teleport issues

- Trying to leave the dungeon using the portal will teleport you back to the save point
- If group is disbanded all people is teleported out

--HG--
branch : trunk

src/server/game/Groups/Group.cpp

@@ -374,10 +374,13 @@ uint32 Group::RemoveMember(const uint64 &guid, const uint8 &method)
             if (method == 1)
             {
                 data.Initialize(SMSG_GROUP_UNINVITE, 0);
-                player->GetSession()->SendLfgUpdateParty(LFG_UPDATETYPE_LEADER);
                 player->GetSession()->SendPacket(&data);
             }
 
+            player->GetSession()->SendLfgUpdateParty(LFG_UPDATETYPE_LEADER);
+            if (isLFGGroup() && player->GetMap()->IsDungeon())
+                player->TeleportToBGEntryPoint();
+
             //we already removed player from group and in player->GetGroup() is his original group!
             if (Group* group = player->GetGroup())
             {
@@ -448,6 +451,8 @@ void Group::Disband(bool hideDestroy)
             else
                 player->SetGroup(NULL);
 
+            if (isLFGGroup() && player->GetMap()->IsDungeon())
+                player->TeleportToBGEntryPoint();
             player->GetSession()->SendLfgUpdateParty(LFG_UPDATETYPE_GROUP_DISBAND);
             player->GetSession()->SendLfgUpdateParty(LFG_UPDATETYPE_LEADER);
         }