The mother of the maniac accused of knifing a Jewish and Asian man in separate attacks on Upper West Side cried out in court Friday as new details were revealed about her son’s alleged hate-filled rampage. Raul Morales, 51, looked back into the courtroom gallery and mouthed “I love you, mom” after a judge held him without bail for Thursday’s bloodshed during which he yelled ‘‘Allahu Akbar” three times, according to prosecutors. His mom, who said “Raul, I’m here,” then buried her head in her hands and wept as her son was ushered out of the courtroom. Morales approached the...