A federal judge gave a lawyer who works for the city of Chicago the go-ahead to pursue claims she was a victim of discrimination and retaliation when she was denied a promotion.In a written opinion last week, U.S. District Judge Manish S. Shah did not rule on the merits of Vera Elue’s contention that her race — she is African-American — and her report that a superior had a conflict of interest lay behind her being rejected for a position as an assistant commissioner in the city’s Business Affairs …