fdo#80269 (part): Help button for Calc Form dialog

Add help button in Calc - Data - Form... dialog

Change-Id: I7263fdc8709add1ce9cca69ece20feb14ab71589
Reviewed-on: https://gerrit.libreoffice.org/11204Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>

sc/uiconfig/scalc/ui/dataform.ui

 <?xml version="1.0" encoding="UTF-8"?>
+<!-- Generated with glade 3.16.1 -->
 <interface>
-  <!-- interface-requires gtk+ 3.0 -->
+  <requires lib="gtk+" version="3.0"/>
   <object class="GtkDialog" id="DataFormDialog">
     <property name="can_focus">False</property>
     <property name="border_width">6</property>
@@ -103,6 +104,21 @@
                 <property name="secondary">True</property>
               </packing>
             </child>
+            <child>
+              <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>
+                <property name="use_stock">True</property>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">6</property>
+                <property name="secondary">True</property>
+              </packing>
+            </child>
             <child>
               <object class="GtkButton" id="close">
                 <property name="label" translatable="yes">_Close</property>
@@ -114,7 +130,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">True</property>
-                <property name="position">6</property>
+                <property name="position">7</property>
                 <property name="secondary">True</property>
               </packing>
             </child>
@@ -175,39 +191,6 @@
                     <child>
                       <placeholder/>
                     </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
-                    <child>
-                      <placeholder/>
-                    </child>
                   </object>
                   <packing>
                     <property name="expand">False</property>