[gnome-control-center] Non-fast-forward update to branch benzea/startup-fix

[Benjamin Berg <bberg src gnome org>]

The branch 'benzea/startup-fix' 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:

  36457c0... shell: Only try to select an existing panel on startup

Commits added to the branch:

  a5db437... shell: Only try to select an existing panel on startup