By Noah Barkin BERLIN (Reuters) - The political establishment has dismissed Germany's new anti-euro party as a fear-mongering populist aberration that could implode even before a looming federal election. But the first congress of the "Alternative for Germany" (AfD) showed that the movement, launched only a few months ago by a group of renegade academics, journalists and businessmen, is striking a chord with voters and may prove an influential force come September. ...