[gnome-builder] tabs: show arrows inside of notebooks to help move through children.

[Christian Hergert <chergert src gnome org>]

commit f7fbdb2012c462ae93d0baab112a6f3aa2b7db2b
Author: Christian Hergert <christian hergert me>
Date:   Fri Nov 21 03:22:17 2014 -0800

    tabs: show arrows inside of notebooks to help move through children.

 src/tabs/gb-notebook.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/tabs/gb-notebook.c b/src/tabs/gb-notebook.c
index 21d251a..349861b 100644
--- a/src/tabs/gb-notebook.c
+++ b/src/tabs/gb-notebook.c
@@ -184,4 +184,5 @@ gb_notebook_class_init (GbNotebookClass *klass)
 static void
 gb_notebook_init (GbNotebook *notebook)
 {
+  gtk_notebook_set_scrollable (GTK_NOTEBOOK (notebook), TRUE);
 }