[gedit] (4 commits) Non-fast-forward update to branch wip/panels-as-stacks

[Steve Frécinaux <sfre src gnome org>]

The branch 'wip/panels-as-stacks' 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:

  7a46766... Replace GeditPanel with GtkStacks.
  8fb3882... MenuStackSwitcher: do not show hidden children in the menu.
  2957228... Remove icons from side panels.
  7ef1c89... Make the side pane's header flat.

Commits added to the branch:

  68145d1... Replace GeditPanel with GtkStacks.
  f37719c... MenuStackSwitcher: do not show hidden children in the menu.
  f79ff91... Remove icons from side panels.
  f8838f7... Make the side pane's header flat.