Clean entity assets for a small bit

- Move loot_tables/creature/witch to loot_tables/spots/witch
- Move skillset/spots/general_max and skillset/spots/sceptre_max to
  skillset/preset/max/{general,sceptre}
- Remove tabs from dwarf_grave_robber entity config file

assets/common/entity/spot/dwarf_grave_robber.ron

@@ -1,11 +1,11 @@
 EntityConfig (
     name: Name("Grave Robber"),
     body: RandomWith("dwarf"),
-	alignment: Alignment(Enemy),
+    alignment: Alignment(Enemy),
 
     loot: LootTable("common.loot_tables.creature.humanoid"),
 
-	hands: TwoHanded(Item("common.items.weapons.hammer.steel_hammer-3")),
+    hands: TwoHanded(Item("common.items.weapons.hammer.steel_hammer-3")),
 
     meta: [
         SkillSetAsset("common.skillset.village.guard"),

assets/common/entity/spot/witch_dark.ron

@@ -13,7 +13,7 @@ EntityConfig (
     ))),
     alignment: Alignment(Enemy),
 
-    loot: LootTable("common.loot_tables.creature.witch"),
+    loot: LootTable("common.loot_tables.spots.witch"),
 
     hands: TwoHanded(Item("common.items.weapons.sceptre.belzeshrub")),
 

assets/common/skillset/spots/witch.ron

@@ -1,4 +1,4 @@
 ([
-    Tree("common.skillset.spots.general_max"),
-    Tree("common.skillset.spots.sceptre_max"),    
+    Tree("common.skillset.preset.max.general"),
+    Tree("common.skillset.preset.max.sceptre"),
 ])