A former Sebastopol mayor, Robert Jacob, was convicted of six felony crimes involving the sexual abuse of a child this month. Jacob, 45, pleaded no contest to the half-dozen counts in Sonoma Superior Court on Jan. 20, capping a decade-long descent for the onetime cannabis entrepreneur and local politician, who was selected mayor by his colleagues in 2013.... ...The Press Democrat reported that the victim, age 16 by the time of the preliminary hearing last March,testified that he met Jacob on the Grindr dating app...