inventory and its ui

Former-commit-id: b1a073c5636ac4516e6c9cf41bb97a844057de3f

src/net/torvald/terrarum/gameactors/HumanoidNPC.kt

@@ -53,6 +53,7 @@ open class HumanoidNPC(
                 actorValue[AVKey.SCALE] = value
             }
         override var category = "npc"
+        override val originalName: String = actorValue.getAsString(AVKey.NAME) ?: "NPC"
 
         override fun secondaryUse(gc: GameContainer, delta: Int) {
             // TODO place this Actor to the world