There is a five-acre site in Cornelscourt, Foxrock in south Dublin that property developers and big retailers might well love to pave over and redevelop. Instead, it has been a place where tens of thousands of children have, over the decades, played GAA and rugby.  Since 1959 it has been owned by Foxrock Parish, and was made available for free to local sports clubs notably Geraldines Patrick Moran Club, which has 850 GAA-playing members, and St Brigids RFC, which has 150 rugby-playing child members.  Yesterday, Geraldines Patrick Moran Club announced that an agreement has been reached with Foxrock Parish for…