Upgraded JXR plugin version to 3.0.0
<plugin> <!-- used by PMD to create a source XREF -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jxr-plugin</artifactId>
- <version>2.5</version>
+ <version>3.0.0</version>
</plugin>
</plugins>
</reporting>
