Bound zooming action to zoom keys

- View3D subject selection is no longer enabled by default
- Added documentation

#story[1190]

racevisionGame/src/main/java/visualiser/gameController/Keys/ControlKey.java

@@ -1,6 +1,5 @@
 package visualiser.gameController.Keys;
 
-import javafx.scene.input.KeyCode;
 import network.Messages.Enums.BoatActionEnum;
 
 /**
@@ -45,7 +44,7 @@ public abstract class ControlKey {
     /**
      * What this key should do when the command is issued for it to do its job.
      */
-    public abstract void onAction();//may want to make it take in a visualiser and stuff in the future.
+    public abstract void onAction();
 
     /**
      * What to do when the key is held