RPG Avatar Features + GP Support

GriefPrevention now requires v9.0 or higher.
Added command to make someone the Avatar if RPG is installed.
Add Avatar (RPG) to /bending who
Change staff ranks in /bending who
EnderLance == Carbogen
Added isSubAbility() boolean to AbilityModule
1.5.0 BETA 22
Don't double display custom moves.
1.5.0 BETA 23
Fixing Git issues...
Nerfed MetalClips

Made MetalClips' fourth clip require that the user have a permission,
and changed the overall dynamic of it.
Nerfed LavaSurge

Added a Cooldown for LavaSurge.