Tiny improvement to "who"

As of the next reboot, "who alpha" will list players alphabetically.

You can also do a combination with a group: "who elves alpha" will
list all Elves alphabetically, and "who morons alpha" will list all
immortals alphabetically.

You can abbreviate "alpha" to "al". In fact, you can even write
"alphabetically" if you are bored enough!

- Dain