[gnome-text-editor] Non-fast-forward update to branch wip/snwh/zoom-button-fixes

[Sam Hewitt <snwh src gnome org>]

The branch 'wip/snwh/zoom-button-fixes' 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:

  5c07cb5... window: fix icon display issue & flat buttons

Commits added to the branch:

  8b14ad1... window: Fix zoom button icons & apply flat class