Display FullName instead of UserName in the Profile

Good one, @vinothkannans! I noticed this topic the other day and totally forgot that I’d written this plugin.

Glancing at the code, it’s not immediately obvious to me that it might be broken (but that may not mean much). I can’t quite remember who I wrote it for to know whether it’s still in use (I think it was in use sometime after that, but really don’t remember).

If it doesn’t work, I’ll accept a PR, or if there’s a budget or some plea that will make me fix it for free, I’ll be happy to fix it if someone contacts me.