A coffee shop for locals
By CHRIS BARNETT Fillmore Street’s oldest coffeehouse is gussying itself up, and there’s a whiff of concern in the air. Royal Ground, a funky haunt for neighborhood caffeine addicts for 25 years, last month rearranged its milk and sugar stand and its refrigerated juice display. Hardly a full facelift, but some customers were flummoxed. Loyalists…