gfio: make results notebook scrollable too

And also adds menus to both results and job notebook.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/gfio.c b/gfio.c
index 3cd6149..13e3684 100644
--- a/gfio.c
+++ b/gfio.c
@@ -876,6 +876,8 @@
 	g_signal_connect(win, "destroy", G_CALLBACK(results_window_delete), ge);
 
 	notebook = gtk_notebook_new();
+	gtk_notebook_set_scrollable(GTK_NOTEBOOK(notebook), 1);
+	gtk_notebook_popup_enable(GTK_NOTEBOOK(notebook));
 	gtk_container_add(GTK_CONTAINER(win), notebook);
 
 	ge->results_window = win;
@@ -2395,6 +2397,7 @@
 	ui->notebook = gtk_notebook_new();
 	g_signal_connect(ui->notebook, "switch-page", G_CALLBACK(notebook_switch_page), ui);
 	gtk_notebook_set_scrollable(GTK_NOTEBOOK(ui->notebook), 1);
+	gtk_notebook_popup_enable(GTK_NOTEBOOK(ui->notebook));
 	gtk_container_add(GTK_CONTAINER(ui->vbox), ui->notebook);
 
 	vbox = new_main_page(ui);