Because his small office doubles as a store room for donated food that the Rev. Deacon Dave Ferrell collects for hungry people, it becomes increasingly cramped as Christmas nears. Already, bags and boxes of canned food and even dog food are blocking the lowest shelf of Ferrell’s bookcase at the Trinity Episcopal Church in Nevada City. “It becomes, ‘Where can you hide this stuff?’” Ferrell said with a chuckle. But Ferrell, often called “Deacon Dave,” isn’t one to complain. Not only does he feel compelled to deliver that food to hungry people across Nevada County, it also entices canines visiting …