[gnome-calendar] utils: add "calendars-list" css class to the container

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit cb7f19596664f19828765e6a56fdd4265bbf37be
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Jul 8 16:27:49 2016 -0300

    utils: add "calendars-list" css class to the container
    
    Following the previous commit, add the CSS class to the GtkBox
    that is the container of the calendars.

 src/gcal-utils.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gcal-utils.c b/src/gcal-utils.c
index fee1dab..b32705c 100644
--- a/src/gcal-utils.c
+++ b/src/gcal-utils.c
@@ -661,6 +661,8 @@ fix_popover_menu_icons (GtkPopover *popover)
   menu_section_box = menu_section_children->data;
   menu_section_box_children = gtk_container_get_children (GTK_CONTAINER (menu_section_box));
 
+  gtk_style_context_add_class (gtk_widget_get_style_context (menu_section_box), "calendars-list");
+
   /**
    * Iterate through the GtkModelButtons inside the menu section box.
    */