[Bug 33002] logout dialog UI objections

[Trouilliez vincent]

Public bug report changed:
https://launchpad.net/malone/bugs/33002

Comment:
I like this last mockup very much, as well as the group names ("end session" rather than "log out"), they make sense, so useability-wise they are very good in my view, as a simple user.
UI wise, just need to make buttons look like buttons, and use icons that blend with the default Gnome icon set, for consistency.