+ deleted Datum, replaced by Value
+ added Selection.data method variants
Merge branch 'master' of ssh://git@github.com/gwtd3/gwt-d3.git

Conflicts:
	gwt-d3-api/src/main/java/com/github/gwtd3/api/functions/NestedDatumFunction.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/D3TestSuite.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionContents.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionControls.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSelectionData.java
	gwt-d3-demo/src/main/java/com/github/gwtd3/demo/client/testcases/selection/TestSubselections.java
	gwt-d3-ui/src/main/java/com/github/gwtd3/ui/data/DefaultSelectionUpdater.java


Signed-off-by: anthoni <schiochetanthoni@gmail.com>
Make the test suite screen better

Signed-off-by: anthoni <schiochetanthoni@gmail.com>