Added javadocs to documentation build

Signed-off-by: Kai Kreuzer <kai@openhab.org>

docs/_includes/documentation-menu.html

@@ -102,6 +102,9 @@
 			<li>
 	        	<a href="{{docu}}/development/testing.html">Testing</a>
 	        </li>
+			<li>
+	        	<a href="{{docu}}/javadoc/index.html">API Reference</a>
+	        </li>
     	</ul>    
     </li>
     <li>

docs/pom.xml

@@ -70,6 +70,24 @@
                             </resources>
                         </configuration>
                     </execution>
+                    <execution>
+                        <id>copy-javadoc</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>copy-resources</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${basedir}/documentation/javadoc</outputDirectory>
+                            <resources>
+                                <resource>
+                                    <directory>${basedir}/../target/apidocs</directory>
+                                    <includes>
+                                        <include>**</include>
+                                    </includes>
+                                </resource>
+                            </resources>
+                        </configuration>
+                    </execution>
                 </executions>
             </plugin>
             <plugin>

pom.xml

@@ -401,7 +401,7 @@
             <configuration>
               <!-- 'javadoc.opts' project property is set by the 'doclint-java8-disable' profile. It is important to keep 'javadoc' profile declaration after the declaration of 'doclint-java8-disable' profile. -->
               <additionalparam>${javadoc.opts}</additionalparam>
-              <excludePackageNames>*.internal.*</excludePackageNames>
+              <excludePackageNames>*.internal.*,nl.*</excludePackageNames>
             </configuration>
           </plugin>
           <plugin>