Manual cleanups to the Magma Storm animation and AnimTask_InvertScreenColor
Conflicts:
asm/macros/battle_anim_script.inc
data/battle_anim_scripts.s
include/constants/battle_anim.h
src/battle_anim_bug.c
src/battle_anim_dragon.c
src/battle_anim_effects_1.c
src/battle_anim_normal.c