[geary] Use a horizontal icon row for message actions, bug 782931.

[Michael Gratton <mjog src gnome org>]

commit 8969d175b221e08355c4b7da41aa13869a781ad3
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sun May 21 20:42:58 2017 +0200

    Use a horizontal icon row for message actions, bug 782931.
    
    Signed-off-by: Niels De Graef <nielsdegraef gmail com>

 ui/conversation-email-menus.ui |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/ui/conversation-email-menus.ui b/ui/conversation-email-menus.ui
index 32c7dde..a06f3c5 100644
--- a/ui/conversation-email-menus.ui
+++ b/ui/conversation-email-menus.ui
@@ -3,17 +3,21 @@
 <interface>
   <menu id="email_menu">
     <section>
+      <attribute name="display-hint">horizontal-buttons</attribute>
       <item>
         <attribute name="label" translatable="yes">_Reply</attribute>
         <attribute name="action">eml.reply_sender</attribute>
+        <attribute name="verb-icon">mail-reply-sender-symbolic</attribute>
       </item>
       <item>
         <attribute name="label" translatable="yes">Reply to _All</attribute>
         <attribute name="action">eml.reply_all</attribute>
+        <attribute name="verb-icon">mail-reply-all-symbolic</attribute>
       </item>
       <item>
         <attribute name="label" translatable="yes">_Forward</attribute>
         <attribute name="action">eml.forward</attribute>
+        <attribute name="verb-icon">mail-forward-symbolic</attribute>
       </item>
     </section>
     <section>