By Holger Hansen BERLIN (Reuters) – Germany’s Greens on Saturday elected their youngest ever leader, building on their success in a national election last year that revealed their popularity among young voters. Ricarda Lang, a 28-year-old lawmaker, will co-lead the party with her parliamentary colleague and foreign affairs expert, Omid Nouripour. They replace Annalena Baerbock and Robert Habeck who have led the party since 2018 but have both taken ministerial posts in Germany’s new government. The Greens came third in the election and are junior partners in a three-way coalition led by Social …