RFR: 8307176: Monkey Tester Application Part 2

[Andy Goryachev]

Adding changes to the MonkeyTester application accumulated since the last test sprint, from a separate repository
https://github.com/andy-goryachev-oracle/MonkeyTest

User preferences location:
The applications stores its user preferences (window location, etc.) in ~/.MonkeyTester directory.
- To use a different directory, redefine the "user.home" system property, -Duser.home=<...>.
- To disable saving, specify -Ddisable.settings=true vm agrument.

- ✔ replace setId() with some other way of setting component name
- ✔ change property for ui.settings dir
- ✔ add pie chart
- ✔ ComboBox: The current two buttons don't seem all that useful. I'm not even sure what, exactly, they do. What would be useful is a way to select the number of items in the list (like there is with ChoiceBox)
- ✔ ListView: Changing the selection model or checking / unchecking the "null focus model" option clears the list, which is unexpected. Given that there is a separate "clear list" button, it doesn't seem needed either.
- ✔ TextField: The default alignment of BASELINE_RIGHT is unexpected (unless there is a good reason, defaults for properties should match the API default to avoid surprises).
- ✔ Menu item: Window --> Open Modal Window "Platform.exit()" should not be the default choice (if you press <ENTER> the app will exit)
- ✔ TableView: The column sorting feature would be more useful if it were possible to have different data for each row
- ✔ Add Skin -> (null skin, set new skin) menus to all related controls to enable leak tests
- ✔ TableView: cell factory, cell value factory 
- ✔ TreeTableView: cell factory
- ✔ TreeView: cell factory
- ✔ add massive CJK text for JDK-8090110 / JDK-8089418
- ✔ clipboard monitor tool
- ✔ add to the status bar: JVM version, JFX version, current directory, screen scale
- ✔ WebView page

To be continued... JDK-8316372

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Commit messages:
 - cleanup
 - scroll pane
 - whitespace
 - whitespace
 - whitespace
 - copied from another repo

Changes: https://git.openjdk.org/jfx/pull/1241/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1241&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8307176
  Stats: 4533 lines in 54 files changed: 3115 ins; 869 del; 549 mod
  Patch: https://git.openjdk.org/jfx/pull/1241.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1241/head:pull/1241

PR: https://git.openjdk.org/jfx/pull/1241