[gnome-shell] (6 commits) Non-fast-forward update to branch benzea/systemd-clean-shutdown-with-extension-disabling

[Benjamin Berg <bberg src gnome org>]

The branch 'benzea/systemd-clean-shutdown-with-extension-disabling' 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:

  4ca2229... data: Enable clean session shutdown after gnome-shell failu

Commits added to the branch:

  bb48205... extensions-tool: Fix removing from settings list (*)
  c255b4d... theme: Darken hovered message-media-control button (*)
  18421e8... theme: Add message close button styling (*)
  42eb9f4... theme: Add :active styling to message-close and media contr (*)
  f061bbe... main: Create/delete a gnome-shell-stable file
  26ea9db... data: Enable clean session shutdown after gnome-shell failu

(*) This commit already existed in another branch; no separate mail sent