[gnome-control-center] online-accounts: Add a header label as per the latest mockups

[Debarshi Ray <debarshir src gnome org>]

commit 8b56b9d1d83eacf52f7d7980e0f6ec7533760984
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Nov 9 16:04:23 2016 -0200

    online-accounts: Add a header label as per the latest mockups
    
    https://bugzilla.gnome.org/show_bug.cgi?id=774222

 panels/online-accounts/online-accounts.ui |   12 +++++++++++-
 1 files changed, 11 insertions(+), 1 deletions(-)
---
diff --git a/panels/online-accounts/online-accounts.ui b/panels/online-accounts/online-accounts.ui
index 9cbb82b..9187442 100644
--- a/panels/online-accounts/online-accounts.ui
+++ b/panels/online-accounts/online-accounts.ui
@@ -10,12 +10,22 @@
         <property name="can_focus">False</property>
         <property name="spacing">18</property>
         <property name="border-width">8</property>
-        <property name="orientation">horizontal</property>
+        <property name="orientation">vertical</property>
         <property name="margin-start">6</property>
         <property name="margin-end">6</property>
         <property name="margin-top">6</property>
         <property name="margin-bottom">6</property>
         <child>
+          <object class="GtkLabel">
+            <property name="visible">True</property>
+            <property name="can_focus">False</property>
+            <property name="label" translatable="yes">Connect to your data in the cloud</property>
+            <attributes>
+              <attribute name="scale" value="1.66" />
+            </attributes>
+          </object>
+        </child>
+        <child>
           <object class="GtkBox" id="accounts_tree_box">
             <property name="visible">True</property>
             <property name="orientation">vertical</property>