[gnome-boxes] display-toolbar: use view-more-symbolic when in display view

[Felipe Borges <felipeborges src gnome org>]

commit 004899cb69518384b7777ca61fd72e38f38781fe
Author: Joshua Lee <lee son wai gmail com>
Date:   Wed Oct 3 20:30:10 2018 +0100

    display-toolbar: use view-more-symbolic when in display view
    
    Menus that act on the current view and not the application itself should use the view-more-symbolic icon. 
See: https://developer.gnome.org/hig/stable/secondary-menus.html.en
    
    Fixes #253

 data/ui/display-toolbar.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/ui/display-toolbar.ui b/data/ui/display-toolbar.ui
index 8f50947c..e8e0d6c6 100644
--- a/data/ui/display-toolbar.ui
+++ b/data/ui/display-toolbar.ui
@@ -53,7 +53,7 @@
             <child>
               <object class="GtkImage" id="props_image">
                 <property name="visible">True</property>
-                <property name="icon-name">open-menu-symbolic</property>
+                <property name="icon-name">view-more-symbolic</property>
                 <property name="icon-size">1</property>
               </object>
             </child>