(Changes headline to city from police) By Tyler Clifford (Reuters) – The family of an African refugee who was shot and killed during a traffic stop in Grand Rapids, Michigan, has filed a civil lawsuit against the city and a former police officer charged with murdering him. The suit was filed on Wednesday in the U.S. District Court in Western Michigan, according to online records, on behalf of the family of Patrick Lyoya, a 26-year-old immigrant from the Democratic Republic of Congo. Lyoya was fatally shot in the back of the head in April by former officer Christopher Schurr, 31, during an alte…