Monkey Tester Application Part 3

Further changes to the MonkeyTester application:

- remember split pane divider
- defaults for properties: bound: should match the API default, other: set most common case.
- use 'private' instead of 'protected'
- added more scripts to the 'writing systems' text sample
- add RTL text control options
- added RTL window control menu
- added embedded swing/fx in tools
- added copy popup menu in clipboard viewer
- added the custom css to the css playground tool