text: Al-Sadr Aide: We Will Surrender Shrine NAJAF, Iraq - Followers loyal to radical Shiite cleric Muqtada al-Sadr said Friday they were preparing to hand control of the revered Imam Ali Shrine to top Shiite religious authorities in a bid to end a two-week-old uprising in the holy city of Najaf.    Al-Sadr aide Ahmed al-Shaibany said he was on his way to the office of Grand Ayatollah Ali al-Sistani, Iraq's top Shiite Muslim cleric, to offer to present officials there with keys to the shrine...