Created scene to view/update current key bindings.

- Current key bindings are shown on buttons
- Added button action events to store the clicked button
- Added key press event to entire pane
- Button text is updated to display its key
- Added functionality to keyFactory to update key bindings
- CSS styling for some components

#story[1197]

racevisionGame/src/main/resources/css/keyBindings.css

@@ -0,0 +1,35 @@
+.list-view .list-cell {
+    -fx-cell-size: 40;
+    -fx-font-family: "Tahoma";
+    -fx-background-color: #fffff0;
+    -fx-alignment: center;
+}
+
+.list-view .list-cell:even {
+    -fx-background-color: #ffffdc;
+}
+
+.list-view .list-cell:selected {
+    -fx-background-color: #f9e5c3;
+    -fx-font-family: "Comic Sans MS";
+    -fx-font-weight: bold;
+    -fx-font-size: 18;
+}
+
+.button {
+    -fx-background-color: linear-gradient(#acdeff 50%, #a9c8ff 100%);
+    -fx-background-radius: 4px;
+    -fx-border-radius: 4px;
+    -fx-text-fill: #242d35;
+    -fx-font-size: 12px;
+    -fx-font-family: "Courier New";
+}
+
+.button:focused {
+    -fx-background-color: white;
+    -fx-border-color: #0056bd;
+}
+
+#anchor {
+    -fx-background-color: #fdfac3;
+}