Due to confusion about "members" and "supporters", we want at least the
menu navigation to not use the phrase "members" since some Supporters
expect that to refer to a type of donor.
While we will not be rebranding "member projects" fully at this time, we
want to favor the term projects.
A few additional changes, in particular moving files from members/ ->
projects/ directory will be needed in next commit.
Change all links when possible to not mention a site, so HTTPS will be used
automatically for same-site links.
For embedded images, and other links out to the rest of the world, use HTTPS
when the site is known to support it.
