By Panu Wongcha-um BANGKOK (Reuters) – Thai rebels sidelined from peace talks claimed responsibility on Saturday for deadly bombings in the country’s Muslim-majority deep south that broke a Ramadan holiday agreed between the main rebel group and the government. The two explosions on Friday, which killed a civilian and injured three policemen, were carried out by “G5”, a militant group of the Patani United Liberation Organisation (PULO), its president, Kasturi Mahkota, told Reuters. More than 7,300 people have been killed since 2004 in the fighting between the government and shadowy groups seek…