- emergency siren and alarm buzzer items

- wires and alarm buzzers can be fabricated
- fixed items selecting constructions outside the hulls
- ItemLabel.TextColor works now
- removed a random dot at the corner of head5.png
- inventory is visible in wiring mode
- fixed null reference exceptions in AIObjectiveGoto and Holdable

Subsurface/Source/Items/Components/Holdable/Holdable.cs

@@ -241,7 +241,7 @@ namespace Barotrauma.Items.Components
 
         public override void Update(float deltaTime, Camera cam)
         {
-            if (!item.body.Enabled) return;
+            if (item.body==null || !item.body.Enabled) return;
             if (!picker.HasSelectedItem(item)) IsActive = false;
 
             ApplyStatusEffects(ActionType.OnActive, deltaTime, picker);