[gnome-calendar] theme: Allow use circle icon class on random images

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

commit 133e82f34e03f0200c7767d1b9af7fd4418e9ff5
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Apr 27 20:36:54 2019 -0300

    theme: Allow use circle icon class on random images
    
    Will be needed to tweak the suggestion row's GtkImage.

 data/theme/Adwaita.css | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/data/theme/Adwaita.css b/data/theme/Adwaita.css
index 78427a80..c674a3fa 100644
--- a/data/theme/Adwaita.css
+++ b/data/theme/Adwaita.css
@@ -258,6 +258,7 @@ event.color-light:backdrop {
 }
 
 /* adds a subtle shadow to the calendar color dot when it makes sense */
+image.calendar-color-image,
 button:active:not(:backdrop) .calendar-color-image,
 button:checked:not(:backdrop) .calendar-color-image,
 .calendars-list .calendar-color-image:not(:backdrop):not(:disabled),