The Salvadorian illegal migrant who viciously raped and killed Rachel Morin was emotionless as her grieving children remembered their “kind” and “determined” mom at his sentencing Monday — where he was given life without the possibility of parole. Harford County Circuit Court Judge Yolanda Curtin threw the book at Victor Martinez-Hernandez, 24, after an hours-long hearing Monday where Morin’s family members, including four of her five children, delivered emotional victim impact statements. Morin’s eldest daughter…