We should considering only hiding the logout item when the user has autologin enabled (in addition to there being only one user account and one session)

It makes sense because if a user needs to use the login screen to get to the session they may be confused if they can't find a way back to it.  

We should also consider doing autologin by default on single user systems (maybe with auto locking?)

(irc conversation that lead me to file this bug:

<desrt> mclasen: always-show-logout doesn't get updated if the user changes it
<desrt> ie: have to restart the shell
<desrt> but thanks for the tip.  i actually created a second user on my system just so that i'd have a logout item :)
<cosimoc> desrt, should probably file a bug for that
<halfline> i wonder if it would make sense to only hide logout if autologin is enabled
<cosimoc> autologin + single user maybe
<halfline> cosimoc: right, same constraints it has today but also autologout
<halfline> *login
<cosimoc> I think that'd make sense

)