For Jelly Roll, enacting positive change in the world often starts with the very community that raised him. Even though his fast-growing country superstardom has taken to every corner of the U.S. — and beyond — Jelly still makes it a priority to give back to his home community, including the Davidson County Juvenile Detention Center: The same place where he was incarcerated as a teen. During a new Sunday Sitdown With Willie Geist interview, Jelly explains how he recently partnered with the facility, and even teamed up with the attorney who once prosecuted him. “I said, ‘I am all in. I will han…