[glade] Add GtkStackSidebar to control and display widget group

[Juan Pablo Ugarte <jpu src gnome org>]

commit 39b7ec4c383f01ffc03c1856f71afcc3cfcb5b51
Author: Juan Pablo Ugarte <juanpablougarte gmail com>
Date:   Wed Aug 2 06:20:15 2017 -0300

    Add GtkStackSidebar to control and display widget group

 plugins/gtk+/gtk+.xml.in |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/plugins/gtk+/gtk+.xml.in b/plugins/gtk+/gtk+.xml.in
index 0f73720..10bc351 100644
--- a/plugins/gtk+/gtk+.xml.in
+++ b/plugins/gtk+/gtk+.xml.in
@@ -5636,6 +5636,7 @@
 
       <glade-widget-class-ref name="GtkInfoBar"/>
       <glade-widget-class-ref name="GtkStackSwitcher" />
+      <glade-widget-class-ref name="GtkStackSidebar" />
     </glade-widget-group>
     
     <glade-widget-group name="gtk-composite" _title="Composite Widgets">