In the 1970s, the Costa Brava was “a bright and breezy British holiday favourite”, a package tour favourite that was often confused with the Costas Blanca and del Sol, said Paul Richardson in Condé Nast Traveller. Yet most of Catalonia’s “Wild Coast” has never conformed to this “manufactured” sun, sea and sangria image. Stretching from Blanes, an hour north of Barcelona, to the French border, it’s a “complex jigsaw” of “craggy headlands” and “je…