When Username and Email are empty, set Username to Name

[epicfilemcnulty]

Since #309 is still on hold, @bnfinet would you be willing to accept a small fix? It should fix the issue for some providers, tested with PingFed.

[bnfinet]

@epicfilemcnulty that's on me

I appreciate what you're trying to do here but the real fix is to put the real fix in. I keep on hoping to find a window where I can tweak the existing efforts and review them and write a few tests. That keeps on getting pushed out for non VP related reasons.

Thanks for the contribution but I'm going to close in hopes of being able to commit effort to getting sub in properly.