‘Downton’s’ Season 3 Brings Later in Life Love, Match-up of Matriarchs and More

“Downton Abbey’s” third season rolls out Sunday (Jan. 6) with a fresh batch of episodes that, judging by the first five, are as savory and delicious as ever.  Yes, Shirley MacLaine is aboard as rich, social climbing New Yorker Martha Levinson, mother of Lady Grantham (Elizabeth McGovern).  And, yes, her scenes with Dame Maggie Smith as Dowager Countess Violet Crawley are all fans heard and hoped they would be — a new defining moment in the Anglo American special relationship, class versus crass …