copy over css and images for single-page html as well


git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@1735962 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/openjpa-project/pom.xml b/openjpa-project/pom.xml
index 5fe183f..a9cca4e 100644
--- a/openjpa-project/pom.xml
+++ b/openjpa-project/pom.xml
@@ -287,6 +287,20 @@
                                             </fileset>
                                         </copy>
 
+                                        <!-- copy over separate files for single-page document -->
+                                        <mkdir dir="${docbook.target}/img" />
+                                        <copy todir="${docbook.target}/img">
+                                            <fileset dir="${docbook.source}/img">
+                                                <include name="*.png" />
+                                            </fileset>
+                                        </copy>
+                                        <mkdir dir="${docbook.target}/css" />
+                                        <copy todir="${docbook.target}/css">
+                                            <fileset dir="${docbook.source}/css">
+                                                <include name="*.*" />
+                                            </fileset>
+                                        </copy>
+
                                         <!-- copy to parent module for
                                              expanded access in upload -->
                                         <mkdir dir="${parent.site.docs}" />