BENGHAZI, Libya - The Muslim Brotherhood held its first public conference on Libyan soil on Thursday after being banned for decades, and used the platform to set a moderate tone, calling for a broad national reconstruction effort.As Libya emerges from a bloody civil war, many observers believe the next elections could pit religious political groups against secular parties, with better-organized Islamists such as the Brotherhood having a tactical advantage.Speaking nine months to the day after the start of the uprising against Muammar Gaddafi that eventually ended his 42-year rule, Libyan Muslim Brotherhood leader Suleiman Abdelkader praised the rebellion and called on Libya's factions to unite.