[epiphany] history-dialog: Align the listbox at the start

[Jan-Michael Brummer <jbrummer src gnome org>]

commit 6d60d791eebab0c952857792583f6df41557ffe5
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Tue May 28 21:18:42 2019 +0200

    history-dialog: Align the listbox at the start
    
    This avoids it to appear full of nothing if there are not enough
    elements to fill the window's height.

 src/resources/gtk/history-dialog.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/resources/gtk/history-dialog.ui b/src/resources/gtk/history-dialog.ui
index 609e8e684..3cbd69437 100644
--- a/src/resources/gtk/history-dialog.ui
+++ b/src/resources/gtk/history-dialog.ui
@@ -104,6 +104,7 @@
                         <property name="can_focus">False</property>
                         <property name="margin_top">6</property>
                         <property name="margin_bottom">6</property>
+                        <property name="valign">start</property>
                         <property name="selection_mode">multiple</property>
                         <property name="activate_on_single_click">False</property>
                         <signal name="button-press-event" handler="on_listbox_button_press_event" 
swapped="no"/>