LOS ANGELES (Reuters) – British folk band Mumford & Sons held their reign at the top of the Billboard 200 album chart with their Grammy-winning album "Babel" in a slow week that saw no new debuts in the top 10. Mumford & Sons, who won Album of the Year at the Grammy awards earlier this month and performed twice on stage, saw a second week of Grammy-related boosts as "Babel" sold 62,000 copies, according to figures from Nielsen SoundScan. It is the fifth non-consecutive week at the top spot for the album, which was released in September 2012 and became one of last year's biggest-selling …
