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