2014-04-28 maxy
 - cinnamon-settings-users.py uses pkexec which requires an policy kit
   authentication agent running (policykit-1-gnome), but the autostart desktop
   file has a OnlyShowIn=GNOME;XFCE;Unity; file, so we should request to add:
   X-Cinnamon to that list.
2016-12-98 marga:
 - Reported this in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=846245

