Place help button on the left of signature dialog

Change-Id: Ic78646b7540d2eaf176b3b6c57b0225793b866bd
Reviewed-on: https://gerrit.libreoffice.org/54597Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

cui/uiconfig/ui/signsignatureline.ui

 <?xml version="1.0" encoding="UTF-8"?>
-<!-- Generated with glade 3.20.0 -->
+<!-- Generated with glade 3.22.1 -->
 <interface domain="cui">
   <requires lib="gtk+" version="3.18"/>
   <object class="GtkDialog" id="SignSignatureLineDialog">
@@ -10,6 +10,9 @@
     <property name="default_width">0</property>
     <property name="default_height">0</property>
     <property name="type_hint">dialog</property>
+    <child>
+      <placeholder/>
+    </child>
     <child internal-child="vbox">
       <object class="GtkBox">
         <property name="can_focus">False</property>
@@ -20,8 +23,8 @@
             <property name="can_focus">False</property>
             <property name="layout_style">end</property>
             <child>
-              <object class="GtkButton" id="cancel">
-                <property name="label">gtk-cancel</property>
+              <object class="GtkButton" id="help">
+                <property name="label">gtk-help</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
@@ -31,16 +34,16 @@
                 <property name="expand">True</property>
                 <property name="fill">True</property>
                 <property name="position">0</property>
+                <property name="secondary">True</property>
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="ok">
-                <property name="label">Sign</property>
+              <object class="GtkButton" id="cancel">
+                <property name="label">gtk-cancel</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
-                <property name="can_default">True</property>
-                <property name="has_default">True</property>
                 <property name="receives_default">True</property>
+                <property name="use_stock">True</property>
               </object>
               <packing>
                 <property name="expand">True</property>
@@ -49,12 +52,13 @@
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="help">
-                <property name="label">gtk-help</property>
+              <object class="GtkButton" id="ok">
+                <property name="label">Sign</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
+                <property name="can_default">True</property>
+                <property name="has_default">True</property>
                 <property name="receives_default">True</property>
-                <property name="use_stock">True</property>
               </object>
               <packing>
                 <property name="expand">True</property>