MADRID (Reuters) -Spain's Socialist Prime Minister Pedro Sanchez and Alberto Nunez Feijoo, leader of the conservative People's Party (PP), held a fractious live television debate on Monday, ahead of a national election on July 23. The pair tore into each other on a range of topics from the economy, housing, and pensions, to the environment, international relations, and policies towards women, interrupting regularly, waving numerical charts, rolling their eyes and gesticulating furiously. "They g