change: - Refining GUI framework.

...neric/client/web/client/application/GenericConstants.java

...bis/generic/client/web/client/application/GroupsView.java

...is/generic/client/web/client/application/MenuElement.java

...s/generic/client/web/client/application/SearchWidget.java

...eric/client/web/client/application/framework/AppView.java

...t/web/client/application/framework/ComponentProvider.java

...web/client/application/framework/ContentPanelAdapter.java

...nt/web/client/application/framework/DispatcherHelper.java

...ient/web/client/application/framework/DummyComponent.java

...ric/client/web/client/application/framework/LeftMenu.java

...b/client/application/ui/sample_browser/SampleBrowser.java