Fix Radio Navigation range computations

They were never applied to the NavAids unless the user opened the MAS config dialog in the Space Center and pressed okay.  Issue reported and diagnosed by vulkans22.  Issue #325

Author: MOARdV

Source/MASConfig.cs

@@ -1,7 +1,7 @@
 /*****************************************************************************
  * The MIT License (MIT)
  * 
- * Copyright (c) 2016-2019 MOARdV
+ * Copyright (c) 2016-2020 MOARdV
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
@@ -130,6 +130,8 @@ public override void OnLoad(ConfigNode node)
             {
                 navigation.DMEPropagation = 1.4f;
             }
+
+            MASLoader.UpdateHorizonDistance();
         }
 
         /// <summary>

Source/MASLoader.cs

@@ -175,6 +175,19 @@ internal static Font GetFont(string fontName)
             }
         }
 
+        /// <summary>
+        /// Convenience function to update navaid horizon distances when propagation
+        /// values change.
+        /// </summary>
+        static public void UpdateHorizonDistance()
+        {
+            int numNavAids = navaids.Count;
+            for (int i = 0; i < numNavAids; ++i)
+            {
+                navaids[i].UpdateHorizonDistance();
+            }
+        }
+
         /// <summary>
         /// Awake() - Load components used by the mod.
         /// </summary>

Source/MASSettings.cs

@@ -1,7 +1,7 @@
 /*****************************************************************************
  * The MIT License (MIT)
  * 
- * Copyright (c) 2017-2019 MOARdV
+ * Copyright (c) 2017-2020 MOARdV
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to
@@ -198,11 +198,7 @@ private void ApplyChanges()
             MASConfig.navigation.VORPropagation = VORPropagation;
             MASConfig.navigation.DMEPropagation = DMEPropagation;
 
-            int numNavAids = MASLoader.navaids.Count;
-            for (int i = 0; i < numNavAids; ++i)
-            {
-                MASLoader.navaids[i].UpdateHorizonDistance();
-            }
+            MASLoader.UpdateHorizonDistance();
         }
 
         private void onAppLauncherShow()