Adding UndeadWitch and Troll to mob_db.

run 'make mobxp'.
run 'make maps' for client-data changes.
Renaming item 542 to Shifting Sands

Adding item 905 named Bottle of Sand
Mobs now drop modified version of Bottles of Sand

FireGoblin, AngryFireGoblin & GiantMaggot
Added Heatwave

Elemental Opposite of Kaflosh
They weaken each other till one disapates
Parcival will now teach heat spell.
Xmas Battle Chamber Reset
Text corrections for Avalia
Fixed bug in partly setting Xmas Chamber battle
Fixed year end reward from being too generous
Xmas Chamber Fixes
- Should no longer get stuck
- Has a bit more challenge to sitting
- Cooldown in between rounds to allow changing of the guard
- Allowing Entry/Exit but not Start
Xmas Reward/Event time fixed to properly display proper event mode
Merge branch 'dungeon' of https://github.com/tux9th/tmwa-server-data into stable-test

Conflicts:
	world/map/db/mob_db.txt
Merge branch 'heat-spell' of https://github.com/tux9th/tmwa-server-data into stable-test

Conflicts:
	world/map/db/item_db.txt
	world/map/db/mob_db.txt