[Bug 75265] Add a way to remove the "switch user" button in Ubuntu's dialog logout

[Guillaume Desmottes]

Public bug reported:

We need a way to disable the "switch user" button in the dialog logout.

We could add a /apps/panel/global/disable_switch_user key or use the one of gnome-screensaver (/apps/gnome-screensaver/user_switch_enabled).
IMHO a new key would be better.

** Affects: gnome-panel (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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Add a way to remove the "switch user" button in Ubuntu's dialog logout
https://launchpad.net/bugs/75265