Back in March I mentioned that a play about the Iraq war at my ol’ hometown high school had been canceled because of its controversial content. After N.Y. Times coverage of the situation got out, the New York theater community came calling. The play, “Voices in Conflict,” has performed to packed houses at two prestigious Off-Broadway venues and a final show on Friday at the Public Theater is sold out. The student performers have juggled finals, college applications, A.C.T.s, and now graduation events to make it into New York for rehearsals and the shows.