We can probably do better with the aliases, but I really think what we
want is a wrapper script that enables readline, ansi, and 280 character
tweets. An update to oysttyer could remove the need for settings
changes for 280.
@IvanExpert removed the raspbian-update call in setup as part of the
jessie compatibility commit, and the script's gone away in A2SERVER as
well. Also removed the other upgrade-handling aliases and the thin
wrapper for raspi-config.
