(FR #1865) Split full name out for Coinbase import

Disclaimer: This is a terrible thing to do, we are only taking this shortcut in
order to send emails using a reasonable guess at the donor's first
name.  A better approach will be to host the donation form.

Change-Id: I06c691ac04f911a145be12d184f43f08731c1171
Merge "(FR #1865) Split full name out for Coinbase import"