Added removeTags() function to ScriptItemStack and isCustomGUI function to ScriptContainer

src/main/java/noppes/npcs/scripted/ScriptContainer.java

@@ -10,6 +10,7 @@ import net.minecraft.inventory.Container;
 import net.minecraft.inventory.IInventory;
 import net.minecraft.item.ItemStack;
 import noppes.npcs.NoppesUtilPlayer;
+import noppes.npcs.containers.ContainerCustomGui;
 import noppes.npcs.scripted.interfaces.IContainer;
 import noppes.npcs.scripted.interfaces.IItemStack;
 
@@ -82,4 +83,8 @@ public class ScriptContainer implements IContainer {
 
         return items;
     }
+
+    public boolean isCustomGUI() {
+        return this.container instanceof ContainerCustomGui;
+    }
 }