JOHOR BAHRU, July 11 — Top Barisan Nasional (BN) leaders began gathering at the coalition’s main operations room at the Johor UMNO Liaison Committee building tonight to monitor developments and the official results of the Johor State Election.Among those present were UMNO president and BN chairman Datuk Seri Dr Ahmad Zahid Hamidi, Menteri Besar Datuk Onn Hafiz Ghazi and BN secretary-general Datuk Seri Zambry Abd Kadir.Meanwhile, the atmosphere a…