Added IDialogImage, a scripted object which is used by IDialog. Used to add dialog images.

IDialog:
-Added several new functions for dialogs' new visual attributes, as well as a way to add, get, create, remove, and clear dialog images.

Global NPC events:
-Added fields and variables from the old ScriptEvent events, in preparation to replace the old events with NpcEvent instances on local NPC scripts.
-Fixed issue where some event hooks would run on remote worlds.

Global NPC killed event:
-Added droppedItems and expDropped fields.

IWorld and NpcAPI:
-Now always uses a non-remove WorldServer object to create ScriptWorld objects and add them to the world cache.

src/main/java/noppes/npcs/scripted/entity/ScriptEntity.java

@@ -29,6 +29,7 @@ import noppes.npcs.scripted.ScriptBlockPos;
 import noppes.npcs.scripted.ScriptWorld;
 import noppes.npcs.scripted.constants.EntityType;
 import noppes.npcs.scripted.interfaces.IParticle;
+import noppes.npcs.scripted.interfaces.IWorld;
 import noppes.npcs.scripted.interfaces.entity.IEntity;
 import noppes.npcs.scripted.interfaces.INbt;
 import noppes.npcs.scripted.interfaces.IPos;
@@ -755,7 +756,7 @@ public class ScriptEntity<T extends Entity> implements IEntity {
 		}
 	}
 
-	public ScriptWorld getWorld() {
-		return (ScriptWorld) NpcAPI.Instance().getIWorld((WorldServer) entity.worldObj);
+	public IWorld getWorld() {
+		return NpcAPI.Instance().getIWorld(entity.worldObj);
 	}
 }