The extremely troubled Britney Spears was allowed to see her two sons for three hours today. Britney’s father Jamie was there, as was the fallen pop star’s psychiatrist. Kevin Federline’s bodyguard dropped the boys off at Britney’s house around 9am and came back around noon to pick them up. …lawyers for Spears and Kevin Federline reached a visitation agreement Friday, the pop star saw her children Preston, 2, and Jayden, 1, for...