Just days after the New Hampshire House approved a bill that would remove the threat of arrest for low-level marijuana possession, a man in jail on a possession charge died of unknown causes in his cell. NHPR reports: A homeless man jailed for marijuana possession and unable to come up with the $100 cash bail was found dead in his cell at the Valley Street Jail in Manchester Sunday. [caption id="attachment_9681" align="alignright" width="225"] Jeffrey Pendleton (Photo: NH-ACLU)[/caption] Jeffrey…