Code style
Fixed clashing slf4j scope
Merge branch 'cv_errai_marshalling' into cv_rest_dispatch_standalone

Conflicts:
	gwtp-core/gwtp-dispatch-rest/src/main/java/com/gwtplatform/dispatch/client/gin/RestDispatchAsyncModule.java
	gwtp-core/gwtp-dispatch-rest/src/main/java/com/gwtplatform/dispatch/client/rest/RestDispatchAsync.java