[gimp] Preferences: add toolbox-wilber toggle

[Alexandre Prokoudine <aprokoudine src gnome org>]

commit e75ced91a720ea249addfe1f3b114ae881801db5
Author: Alexandre Prokoudine <alexandre prokoudine gmail com>
Date:   Sat Jan 6 07:26:22 2018 +0300

    Preferences: add toolbox-wilber toggle
    
    Oh blasphemy! The Wilber logo in the toolbox can now be disabled
    directly via the Preferences dialog (on the Toolbox page).
    
    The logo is staying enabled by default though. Long live Wilber!

 app/dialogs/preferences-dialog.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/app/dialogs/preferences-dialog.c b/app/dialogs/preferences-dialog.c
index 5cfd5c0..edb82b4 100644
--- a/app/dialogs/preferences-dialog.c
+++ b/app/dialogs/preferences-dialog.c
@@ -1949,6 +1949,10 @@ prefs_dialog_new (Gimp       *gimp,
   vbox2 = prefs_frame_new (_("Appearance"),
                            GTK_CONTAINER (vbox), FALSE);
 
+  prefs_check_button_add_with_icon (object, "toolbox-wilber",
+                                    _("Show GIMP _logo (drag-and-drop target)"),
+                                    GIMP_ICON_WILBER,
+                                    GTK_BOX (vbox2), size_group);
   prefs_check_button_add_with_icon (object, "toolbox-color-area",
                                     _("Show _foreground & background color"),
                                     GIMP_ICON_COLORS_DEFAULT,