clean up raw_input after rendering of form components
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                 Key: WICKET-1090
                 URL: https://issues.apache.org/jira/browse/WICKET-1090
             Project: Wicket
          Issue Type: Bug
    Affects Versions: 1.3.0-beta4, 1.3.0-beta3, 1.3.0-beta2, 1.3.0-beta1
            Reporter: Eelco Hillenius
            Assignee: Eelco Hillenius
             Fix For: 1.3.0-beta5


This code doesn't work like it should:

  super("createUserForm", new CompoundPropertyModel(bean));
  final TextField passwordField = new TextField("password");
  passwordField.setOutputMarkupId(true);
  passwordField.setLabel(new ResourceModel("label.createuser.password"));
  add(passwordField);
  add(new AjaxLink("generatePasswordLink") {
    @Override
    public void onClick(AjaxRequestTarget target) {
      bean.setPassword(PasswordGenerator.generate().toString());
      target.addComponent(passwordField);
    }
  });

It should update the label with the new password, but it doesn't when done 
after a form submit since it still has the raw_input value it got from that 
last form submit. There is no reason (as far as I know) to hold on to that 
value after rendering, so the fix is to clean the raw_input at the end of 
requests (i.e. onAfterRender).

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