The weird formality of using your complete name I think feels even
spammier than saying nothing.
(imported from commit b2326de91866fa3c13c2023723f64d1beadf435e)
Handled by the queue processor for signups. Added a management command
that accomplishes the same task, in case it's needed for manually added users,
or in case we goof and need to remove queued emails for a given user.
This addresses Trac #1807
(imported from commit 6727b82a07fa6a3ea3d827860c9e60fd0602297a)