* Army takes mosque from gunmen - security sources * Interior minister sees long fight, estimates gunmen at 200 * PM vows security will be restored in the **rth By Nazih Siddiq TRIPOLI, Leba**n, Oct 27 (Reuters) - Guns appeared to fall silent in the **rthern Lebanese city of Tripoli on Monday after two days of battles between the army and Islamist gunmen, some of the worst fighting to spill over into Leba**n from Syria's civil war next door. ...