overwrite
Merge branch 'master' of
https://github.com/genericsystem/genericsystem2011.git

Conflicts:
	genericsystem-impl/src/main/java/org/genericsystem/core/GenericImpl.java
	genericsystem-impl/src/main/java/org/genericsystem/snapshot/FunctionalSnapshot.java
	genericsystem-impl/src/main/java/org/genericsystem/tree/NodeImpl.java
	genericsystem-jsf/src/main/java/org/genericsystem/jsf/util/GsMessages.java
Continue Vertex model
Merge
Merge branch 'master' of https://github.com/genericsystem/genericsystem2011.git