Student identification process

[S-B-Iwan]

Hi everyone,

Hey,
I think it would be a good idea to allow pdf upload for student identity proof. At least in Germany, we get our "Immatrikulationsbescheinigung" (proof that we are enrolled for that specific semester) as a pdf online. I figure this is the case for a lot of countries over the world. I just converted the pdf to img before uploading, which works fine, but that seems like an easy quality of life update to fix.
Have a great Christmas Holiday everyone!