Further additions to the MonkeyTester application:

✔

- platform preferences monitor
- mouse listener
- additional choices: background
- new pages: stage, separator, slider, media player, anchor pane, border pane, stack pane
- improved pages: hbox, vbox
- improved css playground
- additional properties: Node::clip, Region::shape, TextInputControl::textFormatter
- font selector in Tools -> JTextArea/JTextField Embedded in SwingNode