RFR: 8358450: Viewport characteristics media features [v9]

[Michael Strauß]

> Implementation of [viewport characteristics media features](https://www.w3.org/TR/mediaqueries-5/#mf-viewport-characteristics):
> * `width`
> * `height`
> * `aspect-ratio`: width / height
> * `orientation`: `portrait`, `landscape`
> * `display-mode`: `fullscreen`, `standalone` (note: `browser` and `minimal-ui` are not supported in JavaFX)

Michael Strauß has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 13 commits:

 - resolve merge conflicts
 - Merge branch 'master' into feature/media-features-viewport-characteristics
   
   # Conflicts:
   #	modules/javafx.graphics/src/test/java/test/javafx/css/CssParser_mediaQuery_Test.java
 - update cssref.html
 - Merge branch 'master' into feature/media-features-viewport-characteristics
 - whitespace, add final modifier
 - Merge branch 'master' into feature/media-features-viewport-characteristics
 - Refactor context awareness
 - Merge branch 'master' into feature/media-features-viewport-characteristics
 - Merge branch 'master' into feature/media-features-viewport-characteristics
 - Clarify and test handling of text case
 - ... and 3 more: https://git.openjdk.org/jfx/compare/e8820e24...3dabf1e0

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

Changes: https://git.openjdk.org/jfx/pull/1844/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1844&range=08
  Stats: 2501 lines in 38 files changed: 1981 ins; 198 del; 322 mod
  Patch: https://git.openjdk.org/jfx/pull/1844.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1844/head:pull/1844

PR: https://git.openjdk.org/jfx/pull/1844