Use manpath instead of man --path in man.fish function (as in commit
c7941fc).
Add postgres psql completion

Options and descriptions are from psql --help output. Database and username
completion based on the bash completion
Add postgres psql completion

Options and descriptions are from psql --help output. Database and username
completion based on the bash completion
New documentation UI, including tutorial.
Update make_tarball.sh to work on Darwin
Replace nextd/prevd <pre>s with \code
Merge remote-tracking branch 'upstream/master'