Merge branch 'master' of https://github.com/xCrystal/pokecrystal (resolve PR #459)

# Conflicts:
#	data/items/descriptions.asm
#	data/sprite_anims/framesets.asm
#	engine/crystal_colors.asm
#	engine/events/kurt.asm
#	engine/events/special.asm
#	engine/events/std_scripts.asm
#	engine/events_3.asm
#	engine/item_effects.asm
#	engine/namingscreen.asm
#	engine/scripting.asm
#	engine/stats_screen.asm
#	engine/trade_animation.asm
#	home/audio.asm
#	main.asm
#	maps/BattleTower1F.asm
#	maps/BattleTowerBattleRoom.asm
#	maps/BurnedTowerB1F.asm
#	maps/ElmsLab.asm
#	maps/GoldenrodDeptStore5F.asm
#	maps/GoldenrodUnderground.asm
#	maps/HallOfFame.asm
#	maps/MahoganyTown.asm
#	maps/ManiasHouse.asm
#	maps/MobileBattleRoom.asm
#	maps/MobileTradeRoomMobile.asm
#	maps/RadioTower2F.asm
#	maps/Route35NationalParkGate.asm
#	maps/Route36NationalParkGate.asm
#	maps/Route39Farmhouse.asm
#	tilesets/palette_maps.asm

engine/map_objects.asm

@@ -420,8 +420,7 @@ UpdatePlayerStep: ; 4738
 	ret
 ; 4759
 
-Function4759: ; 4759
-; unreferenced
+Unreferenced_Function4759: ; 4759
 	push bc
 	ld e, a
 	ld d, 0
@@ -1573,7 +1572,7 @@ StepType05: ; 4e0c
 	ld [hl], a
 	call IncrementObjectStructField1c
 StepType04: ; 4e21
-	call MobileFn_4fb2
+	call Stubbed_Function4fb2
 	ld hl, OBJECT_DIRECTION_WALKING
 	add hl, bc
 	ld [hl], STANDING
@@ -1581,7 +1580,7 @@ StepType04: ; 4e21
 ; 4e2b
 
 NPCStep: ; 4e2b
-	call MobileFn_4fb2
+	call Stubbed_Function4fb2
 	call AddStepVector
 	ld hl, OBJECT_STEP_DURATION
 	add hl, bc
@@ -1844,7 +1843,8 @@ SkyfallTop: ; 4f83
 	ret
 ; 4fb2
 
-MobileFn_4fb2: mobile
+Stubbed_Function4fb2:
+	ret
 	ld hl, OBJECT_1D
 	add hl, bc
 	inc [hl]