Merge remote-tracking branch 'origin/2.9.5-dev' into 2.9.5-dev

pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
     Description: Solo POM.
-    Version: 3.18.3.20, Sep 16, 2018
+    Version: 3.18.3.21, Sep 23, 2018
     Author: <a href="http://88250.b3log.org">Liang Ding</a>
     Author: <a href="http://www.annpeter.cn">Ann Peter</a>
     Author: <a href="http://vanessa.b3log.org">Vanessa</a>
@@ -83,7 +83,7 @@
         <jsoup.version>1.9.1</jsoup.version>
         <flexmark.version>0.34.30</flexmark.version>
         <qiniu.version>7.2.11</qiniu.version>
-        <jetty.version>9.2.9.v20150224</jetty.version>
+        <jetty.version>9.4.12.v20180830</jetty.version>
         <commons-cli.version>1.3.1</commons-cli.version>
         <commons-codec.version>1.10</commons-codec.version>
         <emoji-java.version>3.2.0</emoji-java.version>

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

@@ -39,7 +39,7 @@ import java.net.URI;
  * </ul>
  *
  * @author <a href="http://88250.b3log.org">Liang Ding</a>
- * @version 1.1.0.13, Sep 16, 2018
+ * @version 1.1.0.14, Sep 23, 2018
  * @since 1.2.0
  */
 public final class Starter {
@@ -155,7 +155,6 @@ public final class Starter {
         }
 
         final int port = Integer.valueOf(portArg);
-
         final Server server = new Server(port);
         final WebAppContext root = new WebAppContext();
         root.setParentLoaderPriority(true); // Use parent class loader
@@ -163,7 +162,6 @@ public final class Starter {
         root.setDescriptor(webappDirLocation + "/WEB-INF/web.xml");
         root.setResourceBase(webappDirLocation);
         server.setHandler(root);
-
         try {
             server.start();
         } catch (final Exception e) {