A medical marijuana cultivation measure called the most progressive in California won approval from the Yuba County Supervisors Tuesday by a 4-1 vote. “We’ve made history,” Sam McConnell, president of the Yuba County Growers Association, told the Marysville Appeal-Democrat, adding that every other county in the state can now follow Yuba County’s lead. Local medical marijuana advocates are hoping that Nevada County will be one of those — but Nevada County Sheriff Keith Royal, for one, expressed skepticism. The Nevada County Board of Supervisors passed its controversial ordinance on May 8, regulating legal grows from a nuisance standpoint. The ordinance …