RFR: 8328828: Monkey Tester Application Part 4 [v2]

[Andy Goryachev]

> Further additions to the MonkeyTester application:
> 
> - tree/table view column property sheets ✔
> - new pages: button, checkbox, hyperlink, menu bar, radio button, toggle button, canvas, split menu button, dnd ✔
> - properties... context menu ✔
> - context menu: table columns, toolbar items ✔
> - control.context menu option
> - property monitor tool ✔
> - accessibility logging ✔
> 
> - editable combobox for double values with pre-set list (e.g. Region: min/max width etc.)
> - Page -> Snapped Split Panes menu option for the control container
> 
> This PR simply syncs up with the dev repository
> https://github.com/andy-goryachev-oracle/MonkeyTest

Andy Goryachev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:

 - review comments
 - Merge remote-tracking branch 'origin/master' into 8328828.monkey
 - whitespace
 - 8328828: Monkey Tester Application Part 4

-------------

Changes:
  - all: https://git.openjdk.org/jfx/pull/1560/files
  - new: https://git.openjdk.org/jfx/pull/1560/files/9de2dfd7..0aee6d12

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1560&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1560&range=00-01

  Stats: 2190 lines in 26 files changed: 1120 ins; 1022 del; 48 mod
  Patch: https://git.openjdk.org/jfx/pull/1560.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1560/head:pull/1560

PR: https://git.openjdk.org/jfx/pull/1560