Provide a way to make the changeset revision number used in the changelog report an active link

    /**
     * A template string that is used to create the changeset URL.
     * 
     * If not defined not change set link will be created
     * 
     * There is one special tokens that you can use in your template:
     * <ul>
     * <li><code>%REV%</code> - this is the changset revision</li>
     * </ul>
     * <p>
     * Example:
     * <code>http://fisheye.sourceforge.net/changelog/a-project/?cs=%REV%</code>
     * </p>
     * <p>
     * <strong>Note:</strong> If you don't supply the %REV% token in your template,
     * the revision will simply be appended to your template URL.
     * </p>
     *
     * @parameter expression="${displayChangeSetDetailUrl}"
     */
    protected String displayChangeSetDetailUrl;