Prompts the user to supply a new name for the menu.

def renameMenu( self ):
        """
        Prompts the user to supply a new name for the menu.
        """
        item = self.uiMenuTREE.currentItem()
        
        name, accepted = QInputDialog.getText( self,
                                               'Rename Menu',
                                               'Name:',
                                               QLineEdit.Normal,
                                               item.text(0))
        if ( accepted ):
            item.setText(0, name)