Modified key bindings can be saved to use in a race.

- new key bindings replace old new bindings on save
- javadoc save method and small updates

#story[1197]

racevisionGame/src/main/java/visualiser/Controllers/KeyBindingsController.java

@@ -91,7 +91,7 @@ public class KeyBindingsController {
     }
 
     /**
-     * Makes a copy of the keyfactory that does not modify the original.
+     * Makes a copy of the {@link KeyFactory} that does not modify the original.
      * @return new keyfactory to be modified
      */
     public KeyFactory copyExistingFactory(){
@@ -109,7 +109,8 @@ public class KeyBindingsController {
 
     /**
      * Creates a listener for the base anchorpane for key presses.
-     * It updates the current key bindings if required.
+     * It updates the current key bindings of the {@link KeyFactory} if
+     * required.
      */
     public void setKeyListener(){
         anchor.addEventFilter(KeyEvent.KEY_PRESSED, event -> {
@@ -150,8 +151,11 @@ public class KeyBindingsController {
         System.out.println("reset clicked");
     }
 
+    /**
+     * Replace existing {@link KeyFactory} with the modified key bindings.
+     */
     public void save(){
-        System.out.println("save clicked");
+        keyFactory = newKeyFactory;
     }
 
 }