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PULITZER-winning play- wright Tony Kushner and his partner, Entertainment Weekly's Mark Harris, exchanged vows of commitment in front of 30 family members and friends Sunday night at Gabriel's on the Upper West Side.<br /> <font size="1" face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" color=#9c0031">I hate Page Six's new online format. Is there any way we can read all the stories without having to click "Next Pag…