RFR: 8325550: Grammatical error in AnchorPane.setLeftAnchor (and other setters) javadoc [v2]

[Nir Lisker]

> Fixes for the `AnchorPane` docs, as well as for the `NodeOrientation` docs in `Node` and `Scene`.
> 
> Note that the default value for a `Scene`'s `NodeOrientation` depends on a system property, while for `Node` it isn't (which means `SubScene` will be different from `Scene`). Not sure if this is intended.

Nir Lisker has updated the pull request incrementally with one additional commit since the last revision:

  Addressed review comments

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1379/files
  - new: https://git.openjdk.org/jfx/pull/1379/files/dac77a49..a3c375df

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1379&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1379&range=00-01

  Stats: 53 lines in 2 files changed: 21 ins; 25 del; 7 mod
  Patch: https://git.openjdk.org/jfx/pull/1379.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1379/head:pull/1379

PR: https://git.openjdk.org/jfx/pull/1379