New Flex Diagram & samples. Refresh Visual Children & other things
related to displaying models on diagram.
Merge branch 'flexdiagram_new' of
https://github.com/cristian-spiescu/main.git into flexdiagram_new

Conflicts:
	org.flowerplatform.flexdiagram.samples.lib/src/org/flowerplatform/flexdiagram/samples/controller/BasicModelRendererController.as