Kelly Reichardt likes uncomplicated. As early as when “Wendy and Lucy” came out her films have testified to her ultra-sharp minimalism and efficiency. “Night Moves,” a genre film in which three environmentalists (they're David Koresh league, but for the tree-hugger set) conspire together to blow up a dam follows the same ethos of subtlety. In lieu and place of a psychological drama about eco-terrorism Reichardt ventures