Making dreams come true is all in a day’s work for Jelly Roll. The star has visited prisons and hospice centers, surprised fast food works with enormous tips and even cried with fans as they share their most heart-wrenching personal tragedies. For his latest good deed, the singer is helping one listener achieve her dreams of higher education. During a mid-June show in downtown Nashville, he spotted a young woman holding up a sign on her phone that read “Please pay my tuition.” Jelly didn’t bat an eye: “We’re gonna talk about what college you go to, what your GPA is, and if all of that checks o…