Rutgers has reinstated the Students for Justice in Palestine, three of the group’s leaders announced Wednesday at a news conference in New Brunswick. The group was suspended Dec. 11 because the university believed it posed “a substantial and immediate threat to the safety and well-being of others.” Rutgers spokeswoman Dory Devlin said the university typically issues interim suspensions if there have been multiple complaints about a group’s conduct, but after an investigation, the suspension of the New Brunswick chapter of SJP has been lifted. The group has been put on probation for a year, “wi…