Make the AIM_CLICK handler in FSM properly deal with an item already there while looting or not. Closes #56.

gui/loot_ui.cpp

@@ -127,8 +127,13 @@ namespace gui {
     update();
   }
 
+  bool LootUI::drop_item(DinkyECS::Entity item_id) {
+    bool dropped = System::drop_item($level, item_id);
+    if(dropped) update();
+    return dropped;
+  }
+
   bool LootUI::mouse(float x, float y, bool hover) {
     return $gui.mouse(x, y, hover);
   }
-
 }