In its well-documented transformation from stuffy to casual, the Parisian food scene has seen a spate of bare bones restaurants and bistros with low-budget design, like Septime and Le Galopin. But now, with more funds (and imagination), chefs and restaurant owners are leaving behind the exposed-concrete look for one that is far more deliberately designed.Here, six new (and newish) Parisian restaurants with good food, relaxed ambience — and big-name architects and design firms behind them