Corrected UNC Old Well

Edited 12/19/20:
Uploaded the modified roof from ewittenstein so they are in one location. Also set it to not print with supports.

I liked ewittenstein's version with the correct roof. I split this into two files because of the supports needed to make the roof put a full size print at over 24 hours. Cura and other programs kept saying it was not watertight and there was a lot of corrections needed but that is above my head. The base printed fine but the roof seemed to have a lot of weird layers to it.