[gnome-control-center] (2 commits) Non-fast-forward update to branch wip/exalm/dark-wallpapers

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/dark-wallpapers' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  625ccb8... background: Support dark wallpapers
  967f4ab... fixup! background: Support dark wallpapers
  dca9560... background: Refine background chooser layout

Commits added to the branch:

  85f1860... background: Support dark wallpapers
  4b816c1... background: Refine background chooser layout