[NONE] Removed javafx and java7 dependencies, extracted examples.

- Removed dependency to javafx library, deleted javafx test class.
- Extracted examples into own project
org.eclipse.gef4.swt.canvas.examples.
[409480] ICU version update
Replace external MWE Maven plugin, delete `src-gen` on `mvn clean`
Use default background color for ZestGraphView

Using the Javadoc background color leads to inconsistent behaviour
on different platforms (e.g. on Ubuntu it's black), and was rather
pointless anyway.
[410772] Integrate SWT event handling into IFigures.
[410772] Create JavaFX pendants (event system).
[409048] Split up test_getConvexHull to investigate test failure on JDK 7.
[409048] Fix Point#getConvexHull() inconsistency issues.

The code used the Vector#getAngleCCW() method to sort the points. Later on, when
the convex hull is build up, Straight#getSignedDistanceCCW() is used to test if
three consecutive points form a "left turn" or a "right turn".

For sorting the points by angle, the Straight#getSignedDistanceCCW() method is
now used instead of the Vector#getAngleCCW() method. Thus, removing any
inconsistency issues caused by using both methods.
[410772] Rename BasicEventDispatcher to AbstractEventDispatcher.
[410772] Add missing copyright headers.
[410772] Further implement EventHandlerManager.
[410772] Add IEventDispatchChain tests.
[410772] Add EventHandlerManager tests.
[410772] Add EventHandlerManagerTests to AllTests.
[NONE] Remove "graphics" projects from category.xml.
[410772] Update event system to support event bubbling and capturing phases.

The event system is updated to match the JavaFX API more closely. Event bubbling
and event capturing are supported. The classifiers are named according to their
JavaFX equivalents.
[NONE] Delete outdated documentation diagrams.
[410772] Make DefaultEventDispatchChainBuilder recursive.

The default implementation of the INode#buildEventDispatchChain(...) method is
adjusted to recursively create the IEventDispatchChain based on the already
created part.
[NONE] Fix save actions for org.eclipse.gef4.swt.canvas.
[410772] Implement mouse enter/exit events.