flip masterlayoutdialog action area orientation to standard

Change-Id: Ic1ec6d2c94384b14fe0b6bd7c65ca33d592de19b
Reviewed-on: https://gerrit.libreoffice.org/53649Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sd/uiconfig/simpress/ui/masterlayoutdlg.ui

 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.18.3 -->
+<!-- Generated with glade 3.20.4 -->
 <interface domain="sd">
   <requires lib="gtk+" version="3.18"/>
   <object class="GtkDialog" id="MasterLayoutDialog">
@@ -11,12 +11,12 @@
     <child internal-child="vbox">
       <object class="GtkBox" id="dialog-vbox1">
         <property name="can_focus">False</property>
+        <property name="orientation">vertical</property>
         <property name="spacing">12</property>
         <child internal-child="action_area">
           <object class="GtkButtonBox" id="dialog-action_area1">
             <property name="can_focus">False</property>
-            <property name="orientation">vertical</property>
-            <property name="layout_style">start</property>
+            <property name="layout_style">end</property>
             <child>
               <object class="GtkButton" id="ok">
                 <property name="label">gtk-ok</property>
@@ -59,6 +59,7 @@
                 <property name="expand">False</property>
                 <property name="fill">True</property>
                 <property name="position">2</property>
+                <property name="secondary">True</property>
               </packing>
             </child>
           </object>
@@ -194,5 +195,8 @@
       <action-widget response="-5">ok</action-widget>
       <action-widget response="-6">cancel</action-widget>
     </action-widgets>
+    <child>
+      <placeholder/>
+    </child>
   </object>
 </interface>