Movin vaadin to appendix

Doc/Sda1/vaadin.xml

 <?xml version="1.0" encoding="UTF-8"?>
-<chapter version="5.0" xml:id="sda1ChapVaadin"
+<section version="5.1" xml:id="sda1SectVaadin"
          xmlns="http://docbook.org/ns/docbook"
          xmlns:xlink="http://www.w3.org/1999/xlink"
          xmlns:xi="http://www.w3.org/2001/XInclude"
@@ -63,20 +63,6 @@
     </glosslist>
   </section>
 
-  <section xml:id="sda1SectVaadinTips">
-    <title><productname>Vaadin</productname> related hints</title>
-
-    <orderedlist>
-      <listitem>
-        <para/>
-      </listitem>
-
-      <listitem>
-        <para/>
-      </listitem>
-    </orderedlist>
-  </section>
-
   <section xml:id="sda1VaadinSortedIntegerSet">
     <title>Properties, editors and listeners</title>
 
@@ -123,4 +109,4 @@
       </qandadiv>
     </qandaset>
   </section>
-</chapter>
+</section>

Doc/lectures.xml

@@ -62,8 +62,6 @@
 
     <xi:include href="Sda1/prerequisites.xml" xpointer="element(/1)"/>
 
-    <xi:include href="Sda1/vaadin.xml" xpointer="element(/1)"/>
-
     <xi:include href="Sda1/xmlintro.xml" xpointer="element(/1)"/>
 
     <xi:include href="Sda1/xmlschema.xml" xpointer="element(/1)"/>
@@ -79,6 +77,12 @@
     <xi:include href="Sda1/jpaintro.xml" xpointer="element(/1)"/>
 
     <xi:include href="Sda1/fo.xml" xpointer="element(/1)"/>
+
+    <appendix>
+      <title>Appendix</title>
+
+      <xi:include href="Sda1/vaadin.xml" xpointer="element(/1)"/>
+    </appendix>
   </part>
 
   <part xml:id="sda2">