data-binding: fix for @Bound fields/methods in super classes
data-binding: initial work on @Model
Merge branch '3.0' of https://github.com/errai/errai into 3.0

Conflicts:
	errai-data-binding/src/main/java/org/jboss/errai/databinding/rebind/BoundDecorator.java
	errai-data-binding/src/test/java/org/jboss/errai/databinding/client/DeclarativeBindingModule.java
	errai-data-binding/src/test/java/org/jboss/errai/databinding/client/test/DataBindingIntegrationTest.java