[gnome-calendar] calendar-popover: Relabel as "Synchronize Calendars"

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

commit 117d56a1c9f8916526ecdb503fbb1d7b110a23c2
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri May 10 13:30:10 2019 -0300

    calendar-popover: Relabel as "Synchronize Calendars"
    
    https://gitlab.gnome.org/GNOME/gnome-calendar/issues/396

 data/ui/calendar-popover.ui | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/data/ui/calendar-popover.ui b/data/ui/calendar-popover.ui
index f79bd805..f450cf9e 100644
--- a/data/ui/calendar-popover.ui
+++ b/data/ui/calendar-popover.ui
@@ -40,7 +40,7 @@
           <object class="GtkModelButton" id="synchronize_button">
             <property name="visible">True</property>
             <property name="action-name">app.sync</property>
-            <property name="text" translatable="yes">_Synchronize</property>
+            <property name="text" translatable="yes">_Synchronize Calendars</property>
           </object>
         </child>
 
@@ -58,6 +58,8 @@
   <!-- Icon -->
   <object class="GtkStack" id="icon_stack">
     <property name="visible">True</property>
+    <property name="transition-type">crossfade</property>
+    <property name="transition-duration">250</property>
     <child>
       <object class="GtkImage" id="calendar_image">
         <property name="visible">True</property>