Henrik Ibsen’s play, “An Enemy of the People,” now being performed on the Goodman Theatre’s Albert main stage through April 15, was written in 1882 but remains as current as last Tuesday’s front page of the New York Times.There, you would have found an article about Cambridge Analytica, an organization which instructs political candidates how to disparage their opponents and, through the use of dirty social media tricks, persuade the people to vote against them.While originally written by …