Reviewed by GREG KING Director: Margarethe Von Trotta Stars: Barbara Sukowa, Janet McTeer. The banality of the biopic? Hannah Arendt is regarded as one of the most important, provocative and controversial thinkers of the twentieth century. It's probably not surprising that Arendt is an anagram of ardent, because she certainly was an outspoken and passionate thinker and writer. A philosopher, intellectual and …