Chat/Channel: fixed CMSG_LEAVE_CHANNEL and added condition for sending Channel Privileges when creating channel

Signed-off-by: Arci <arciatanthoria@gmail.com>
Opcode/Quest: fixed guid error in SMSG_QUESTUPDATE_ADD_KILL
Opcode/Query: fixed guid mistake in SMSG_NAME_QUERY_RESPONSE

Signed-off-by: Arci <arciatanthoria@gmail.com>
Command/Achievement: adding guild achievement via command will be now properly added and saved as guild achievement and not as player achievement

Signed-off-by: Arci <arciatanthoria@gmail.com>
Merge pull request #346 from Arcidev/master

Opcodes: fixed some errors in handled opcodes