fixed bug where the root directory path name was being added to the filename twice. It was initially added in the listFiles/listDirectories functions and then added again in the private function list. I modified the code so it is only added in the list function now.

<HBox opaque='1'>
	<Label name="Title" text="Rio de hola 2008.1"/>
	<Button name="quitButton" text="Quit"/>
	<Button name="aboutButton" text="About"/>
	<Button name="optionsButton" text="Options"/>
</HBox>