Let non-ascii student names save certs locally
Let non-ascii student names save certs locally

Cert PDFs are saved locally in non-production
environments with the student name added to the
filename.  If the student name has non-ascii
characters then certficate creation would break.

stvstnfrd/edx-certificates,Stanford-Online/openedx-certificates,stvstnfrd/edx-certificates,Stanford-Online/openedx-certificates