Returns "description" of current tab (tab text without shortcut info).

def _get_tab_description(self):
        """Returns "description" of current tab (tab text without shortcut info)."""
        text = self._get_page().text_tab
        if "(" in text:
            text = text[:text.index("(") - 1]
        text = text[0].lower() + text[1:]
        return text