HUGE SOUND OVERHAUL

FIRE:
- Finished giving most firebending abilities sound
- Made combustion have its own sound

WATER:
- Gave waterbending moves sound
- Made anything ice-related use a different sound

AIR:
- Gave airbending moves sound

EARTH:
- Converted to the Methods way of using sounds
(playEarthbendingSound(Location)

AVATAR STATE:
- Gave activating the Avatar State sound