🎨 Cleanup code

src/main/java/org/b3log/solo/SoloServletListener.java

@@ -59,7 +59,7 @@ import javax.servlet.http.HttpSessionEvent;
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
  * @author <a href="http://vanessa.b3log.org">Vanessa</a>
- * @version 1.11.0.22, Aug 18, 2019
+ * @version 1.11.0.23, Sep 17, 2019
  * @since 0.3.1
  */
 public final class SoloServletListener extends AbstractServletListener {

src/main/java/org/b3log/solo/processor/console/AdminConsole.java

@@ -66,7 +66,7 @@ import java.util.*;
  * Admin console render processing.
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.7.0.15, Jul 13, 2019
+ * @version 1.7.0.16, Sep 17, 2019
  * @since 0.4.1
  */
 @Singleton

src/main/java/org/b3log/solo/service/DataModelService.java

@@ -59,7 +59,7 @@ import static org.b3log.solo.model.Article.ARTICLE_CONTENT;
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
  * @author <a href="http://vanessa.b3log.org">Liyuan Li</a>
- * @version 1.7.0.10, Apr 22, 2019
+ * @version 1.7.0.11, Sep 17, 2019
  * @since 0.3.1
  */
 @Service