added an assert in a test
Merge branch 'master' of
https://github.com/genericsystem/genericsystem2014.git

Conflicts:
	gs-kernel/src/test/java/org/genericsystem/kernel/VertexRestructurationTest.java
Merge
Merge branch 'master' of
https://github.com/genericsystem/genericsystem2014.git

Conflicts:
	gs-kernel/src/main/java/org/genericsystem/kernel/Vertex.java
	gs-kernel/src/main/java/org/genericsystem/kernel/services/AncestorsService.java
Merge
Merge branch 'master' of
https://github.com/genericsystem/genericsystem2014.git

Conflicts:
	gs-kernel/src/main/java/org/genericsystem/kernel/services/UpdatableService.java
Merge
Merge branch 'master' of https://github.com/genericsystem/genericsystem2014.git
added updateInstance in UpdatableService
moved setInstance methods to UpdatableService class