[gimp] (2 commits) Non-fast-forward update to branch wip/gradient-edit

[N/A <ell src gnome org>]

The branch 'wip/gradient-edit' 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:

  97d0c26... app: implement tool undo for gradient editing in the blend 
  5b90958... app: fix fg/bg color change handling in the blend tool

Commits added to the branch:

  901df58... app: implement tool undo for gradient editing in the blend 
  789945e... app: fix fg/bg color change handling in the blend tool