Various Improvements & Fixes

Map icons now have a constant size independent of zoom level
Galaxy Map now displays zone properties when clicking on a zone
Zone generator now uses half of nebula density, means smaller and more varied zones
Stations will refuse docking to entities with insufficient clearance

Assets/Scripts/UI/Menu/SectorZoneUI.cs

@@ -11,4 +11,5 @@ public class SectorZoneUI : MonoBehaviour
     public MeshRenderer Influence;
     public TextMeshPro Label;
     public Transform IconContainer;
+    public ClickableCollider Clickable;
 }