Union Berlin has been a storied club since time immemorial. German football has never lacked for heartburning tales.  This season, Bayer Leverkusen’s fairytale campaign dominated the headlines. Of course, there is Bayern’s misery & Dortmund’s breakthrough. Germany’s merry go-round was completed by the miracle workers in Kaiserslautern & Saarbrücken.    However, Union is no stranger…