More documentation

Conflicts:
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/HasSpy.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/HasType.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/HasValidationState.java
	gwtbootstrap3/src/main/java/org/gwtbootstrap3/client/ui/base/ValueBoxBase.java