Gold: Support purchasing codes by loggedout users
Creddit reminder: only show when gilding
Gold payment form: update label for using creddit
authorize: Don't include request in exception.

This could leak information into our logs.
authorize: Delete old TODO.
authorize: Don't swallow socket.error.

Exception in make_request was being caught but then instead of
handling it a generic value of `False` was returned, which would
be treated as a valid response by the calling method.
Update license headers to 2014.

Ok, now I'm getting some angst in my commit messages like my
predecessors had.  I understand now.  It's a terrible burden.  Why must
the calendar progress?  Why must numbers increment?  The world is
forever turning.

The future is here.

It is 2014.
Remove c.user.gold from render cache_key.
link: Remove old TODO.