Ojai, the hippie enclave of California, a 1½-hour drive from Los Angeles, reinvents itself.The pool at Hotel El Roblar.Credit: Gregory Goode/Hotel El RoblarOver my two decades of visiting Ojai, which lies about 80 miles north of my home in Los Angeles, much has changed, but never the light.I was roaming the main drag, wondering when East Ojai Avenue, which I usually think of as low-key and bohemian, got so fancy. As I stood in front of Ali Golde…