BATON ROUGE, La. (AP) — New Orleans’ iconic Super-dome, home to the Saints football team and a symbol of the city’s revival after Hurricane Katrina, will undergo a $450 million facelift, under a financing plan approved Thursday that is aimed at keeping the NFL team in Louisiana for decades. The 44-year-old domed stadium, which has hosted seven Super Bowls, will see its ramp system removed and…