Key bindings can be updated with any key.

- Changed key press from FXML key event to a listener
- UP, DOWN, ENTER keys now work
- Keys no longer change cells or press buttons
- Added placeholder buttons Cancel, Reset and Save
- Added some JavaDoc

#story[1197]

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

@@ -52,8 +52,14 @@ public class KeyFactory {
         return keyState;
     }
 
+    /**
+     * Update the key bound to a particular command in the keystate.
+     * @param oldKey the existing key to updated
+     * @param newKey the new key value to replace the old
+     */
     public void updateKey(String oldKey, String newKey){
         ControlKey controlKey = keyState.get(oldKey);
+        keyState.remove(oldKey, controlKey);
         keyState.put(newKey, controlKey);
     }
 }