Reopens the last closed tab.

def open_last_closed(self):
        """ Reopens the last closed tab."""
        editorstack = self.get_current_editorstack()
        last_closed_files = editorstack.get_last_closed_files()
        if (len(last_closed_files) > 0):
            file_to_open = last_closed_files[0]
            last_closed_files.remove(file_to_open)
            editorstack.set_last_closed_files(last_closed_files)
            self.load(file_to_open)