[epiphany] prefs-lang-dialog: Add "suggested-action" style class to the add button

[Yosef Or Boczko <yoseforb src gnome org>]

commit f5406c373b8b8d73905fb92dbbd212a22ae1c202
Author: Yosef Or Boczko <yoseforb src gnome org>
Date:   Tue May 20 12:13:35 2014 +0300

    prefs-lang-dialog: Add "suggested-action" style class to the add button
    
    https://bugzilla.gnome.org/show_bug.cgi?id=730428

 src/resources/prefs-lang-dialog.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/prefs-lang-dialog.ui b/src/resources/prefs-lang-dialog.ui
index c839598..6c4df49 100644
--- a/src/resources/prefs-lang-dialog.ui
+++ b/src/resources/prefs-lang-dialog.ui
@@ -43,6 +43,7 @@
             <property name="use_underline">True</property>
             <property name="valign">center</property>
             <style>
+              <class name="suggested-action"/>
               <class name="text-button"/>
             </style>
           </object>