SEASON PREMIERE: This is the premiere of Season 3 of Broadchurch, the imported British series starring David Tennant and Olivia Colman as police officers – one local, one not – with very different approaches and personalities. It’s the final season for this series, which, like the others, actually is an eight-episode self-contained miniseries, in the mold of the original Prime Suspect. But though the central mystery story stands alone, expect to see several familiar faces, and