Core/Packets:
- updated/enabled CMSG_CHANNEL_DISPLAY_LIST, CMSG_CHANNEL_LIST, CMSG_JOIN_CHANNEL, CMSG_LEAVE_CHANNEL, SMSG_CHANNEL_LIST, SMSG_CHANNEL_NOTIFY_JOINED, SMSG_CHANNEL_NOTIFY_LEFT
- updated CMSG_SET_SELECTION
- updated CMSG_TUTORIAL_FLAG (removed CMSG_TUTORIAL_CLEAR, CMSG_TUTORIAL_RESET)
- fixed null guid in EquipmentSetList
- fixed struct of MonsterMove
Scripts/CoS: Added SetDespawnAtFar, fixes Arthas despawning if no players are in range

(specially during waves)

(cherry picked from commit 0a0e9b196fe3e4db0d807beb17d90895c174ce84)
Merge pull request #11 from TrinityCore/6.x

merge