Facial hair and teeth-whitening will be getting unusually prominent attention from the Supreme Court. The court agreed Monday to hear two cases during its next term that involve matters of personal hygiene in vastly different settings. In one case, the court will to decide whether an Arkansas prison inmate must be allowed to grow a short beard in accordance with his religious beliefs. The justices will hear an appeal from inmate Gregory Holt, who says his Muslim beliefs require him to grow a beard. …