Open it, and they will come. Maybe not just the politicians, either, but the children and their mamas, papas, sisters, brothers, cousins and aunts. New Orleans threw open the doors of Benjamin Franklin Elementary School yesterday in the neighborhood called Uptown, the first public school to open in the city since Hurricane Katrina and the flood shut down everything Aug. 29. In Washington, Howard Dean, the chairman of the Democratic National Committee, announced that he would take 400 Democratic pols to New Orleans in April, for the first convention since the storm. He got permission from the AFL-CIO to meet...