* Create an additional constructor that allows passing a TreeTableView,
  which has been constructed/injected beforehand. It is a requirement
  to use this simplification in combination with FXML.

Issue-Ref: 3209
Issue-Url: https://af3-developer.fortiss.org/issues/3209


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

* The UI provider operates on the items passed by the updateItem method
  in the DynamicTreeViewer.
* Avoid the required null-checks in the UI providers by moving this
  check to the Viewer. This reduces the boilerplate code.

Issue-Ref: 3209
Issue-Url: https://af3-developer.fortiss.org/issues/3209


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

* In order to allow dynamic filling of the eclipse views, don't set a
  fixed Scene size to allow dynamic resizing as required.

Issue-Ref: 3209
Issue-Url: https://af3-developer.fortiss.org/issues/3209


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

* DynamicTreeViewers and alike are often used for a specific set of base
  types. Thus, generics can be used to reduce the code by subclassing
  these controls for specific meta-model types like IHierarchicElements.
* Second, a bit more type-safety is achieved without sacrificing
  ease-of-use since the controls can still be constructed for Objects
  for complex object relations.

Issue-Ref: 3209
Issue-Url: https://af3-developer.fortiss.org/issues/3209


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

* Taken from the SystemFOCUS project.
* Initial import that is lacking integration in the SWT-JavaFX
  "framework".
* Integration with the "framework" and FXML is done in separate commits
  to decouple the import from the integration work.

Issue-Ref: 3209
Issue-Url: https://af3-developer.fortiss.org/issues/3209


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

* Add style sheets for a native look of JavaFX-based views such that the
  UI does not break too much in comparison to the SWT-based views.
* Windows 8/10, Windows 7, and MacOS X are supported. For Linux (GTK/QT)
  no style sheets have been found at the creation time of this commit.
* The style sheets for the Windows 7 and the MacOS look are bundled in
  jars that define additional controls for animation etc. These libs
  are not usable with the SWT/JavaFX integration layer since it is
  impossible to load the control classes defined in the CSS file. The
  reason for this resides in the special classloader architecture of the
  JavaFX/SWT integration where it is impossible to inject classes into
  the classloader hierarchy without modifying e(fx)clipse plugins, or
  writing custom classloader/wrapper plugins for osgi.
* The licenses of the imported CSS files are 2- and 3-clause BSD
  licenses which are placed in the folders containing the CSS files.

Issue-Ref: 3209
Issue-Url: https://af3-developer.fortiss.org/issues/3209


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

* Since the tooling helpers used in the svn installation and the git
  version, a re-rating of all files was required (less work than fixing
  the tooling code that would be only used once).
* Updates the hashes of the classes in the .rating files.
* Removes empty .rating files from directories without ratable files.

Signed-off-by: Alexander Diewald <diewald@fortiss.org>

Signed-off-by: Alexander Diewald <diewald@fortiss.org>