GladeRegistration: fix css matching error on csd

CSD should not be affected by the custom css.

src/glade-registration.glade

 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.19.0 
+<!-- Generated with glade 3.20.0 
 
 Glade - A user interface designer for GTK+ and GNOME
 Copyright (C) 2014 Juan Pablo Ugarte
@@ -40,7 +40,6 @@ Author: Juan Pablo Ugarte <juanpablougarte@gmail.com>
     <property name="page_increment">10</property>
   </object>
   <template class="GladeRegistration" parent="GtkDialog">
-    <property name="name">glade-registration</property>
     <property name="can_focus">False</property>
     <property name="title" translatable="yes">Glade Registration &amp; User Survey</property>
     <property name="default_width">512</property>
@@ -51,6 +50,7 @@ Author: Juan Pablo Ugarte <juanpablougarte@gmail.com>
     <signal name="response" handler="on_registration_dialog_response" swapped="no"/>
     <child internal-child="vbox">
       <object class="GtkBox" id="dialog-vbox1">
+        <property name="name">glade-registration</property>
         <property name="can_focus">False</property>
         <property name="orientation">vertical</property>
         <property name="spacing">2</property>