CreateIdeFileDialog handle listviewer with doubleclick

[chqu1012]

	usedAttributeListViewer.addDoubleClickListener([
			val selection = usedAttributeListViewer.selection as IStructuredSelection		
			val firstElement = selection.firstElement as IMethod
			availableAttributes+=firstElement
			usedAttributes-=firstElement
	])
	
	editableAttributesListViewer.addDoubleClickListener([
			val selection = usedAttributeListViewer.selection as IStructuredSelection		
			val firstElement = selection.firstElement as IMethod
			usedAttributes+=firstElement
			availableAttributes-=firstElement
	])