Simplified Callbacks (no more ok()) for passing update token to URL.
Merge branch 'master' of github.com:Craftware/Kornell

Conflicts:
	kornell-gwt/src/main/java/kornell/api/client/KornellClient.java
	kornell-gwt/src/main/java/kornell/gui/client/GenericClientFactoryImpl.java
	kornell-gwt/src/main/java/kornell/gui/client/presentation/bar/generic/GenericMenuBarView.java
	kornell-gwt/src/main/java/kornell/gui/client/presentation/vitrine/generic/GenericVitrineView.java