-----------------UPDATE-----------------

Permissions messages:
Creative
- No permissions you need gmchannge.gmc
Survival
- No permissions you need gmchannge.gms
Spectator
- No permissions you need gmchannge.gmsp
Adventure
- No permissions you need gmchannge.gma

Change messages:
Creative - Changed your game mode to creative.
Survival - Changed your game mode to survival.
Spectator - Changed your game mode to spectator.
Adventure - Changed your game mode to adventure.