After months of delays, the battle between landlords and tenants in one Bay Area city has come to an end. A rent control ordinance in the city of Concord went into effect Friday after its opponents failed to get enough signatures to place the issue on the November ballot. “We are thrilled that the people of Concord have spoken again in favor of people over corporate greed,” Rhea Elina Laughlin, executive director of advocacy group Rising Juntos, said in a statement. The ordinance reduces the annual percentage by which landlords can raise rent in Concord and bolsters certain eviction protections....