“The Fabulous Four” suffers from such an identity crisis that it feels like a tale of two movies. The first hour is goofy, lazy, and falls almost completely flat, while the second half redeems itself with a heartfelt sincerity. It’s a sweet story aimed at senior women, and they’re going to love it. Lou (Susan Sarandon), Kitty (Sheryl Lee Ralph), and Alice (Megan Mullally) have been buddies for a long time. The gang reunites to travel to Key West to be bridesmaids in the surprise wedding of their best college girlfriend, Marilyn (Bette Midler). As with all reunions, some old wounds are opene...