Mutability implementation is fine.
Added firebug into the firefox.
Changes in the factory to get the mutability integrated with the whole
project.
Added mutability method in StatePageObject.
MatryoshkaDoll now construct a double linked list of decorator objects.
DecoratorObject interface added two methods to support this.
LazyFieldFactory implemented, thats the default field factory created in
DefaultFactory. I created this because of mutability needs
statePageObjects and fieldFactory, but the last one has the first as
dependency.
That field erase the text before new text get inserted.