dep: Update JSoup to 1.16.2

Update JSoup to version 1.16.2.
This requires renaming `Whitelist` to `Safelist`,
because the class name was changed in version 1.15.1
in a breaking change.

.classpath

 	<classpathentry kind="lib" path="ext/commons-pool2-2.0.jar" sourcepath="ext/src/commons-pool2-2.0.jar" />
 	<classpathentry kind="lib" path="ext/pf4j-0.9.0.jar" sourcepath="ext/src/pf4j-0.9.0.jar" />
 	<classpathentry kind="lib" path="ext/tika-core-1.5.jar" sourcepath="ext/src/tika-core-1.5.jar" />
-	<classpathentry kind="lib" path="ext/jsoup-1.7.3.jar" sourcepath="ext/src/jsoup-1.7.3.jar" />
+	<classpathentry kind="lib" path="ext/jsoup-1.16.2.jar" sourcepath="ext/src/jsoup-1.16.2.jar" />
 	<classpathentry kind="lib" path="ext/javax.activation-1.2.0.jar" sourcepath="ext/src/javax.activation-1.2.0.jar" />
 	<classpathentry kind="lib" path="ext/junit-4.12.jar" sourcepath="ext/src/junit-4.12.jar" />
 	<classpathentry kind="lib" path="ext/hamcrest-core-1.3.jar" sourcepath="ext/src/hamcrest-core-1.3.jar" />

build.moxie

 - compile 'redis.clients:jedis:2.6.2' :war
 - compile 'ro.fortsoft.pf4j:pf4j:0.9.0' :war
 - compile 'org.apache.tika:tika-core:1.5' :war
-- compile 'org.jsoup:jsoup:1.7.3' :war
+- compile 'org.jsoup:jsoup:1.16.2' :war
 - compile 'com.sun.activation:javax.activation:1.2.0' :war :manager :fedclient
 - test 'junit:junit:4.12'
 # Dependencies for Selenium web page testing

gitblit.iml

       </library>
     </orderEntry>
     <orderEntry type="module-library">
-      <library name="jsoup-1.7.3.jar">
+      <library name="jsoup-1.16.2.jar">
         <CLASSES>
-          <root url="jar://$MODULE_DIR$/ext/jsoup-1.7.3.jar!/" />
+          <root url="jar://$MODULE_DIR$/ext/jsoup-1.16.2.jar!/" />
         </CLASSES>
         <JAVADOC />
         <SOURCES>
-          <root url="jar://$MODULE_DIR$/ext/src/jsoup-1.7.3.jar!/" />
+          <root url="jar://$MODULE_DIR$/ext/src/jsoup-1.16.2.jar!/" />
         </SOURCES>
       </library>
     </orderEntry>

src/main/java/com/gitblit/utils/JSoupXssFilter.java

 import org.jsoup.Jsoup;
 import org.jsoup.nodes.Document;
 import org.jsoup.safety.Cleaner;
-import org.jsoup.safety.Whitelist;
+import org.jsoup.safety.Safelist;
 
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 
 	 @Inject
 	 public JSoupXssFilter() {
-		 none = new Cleaner(Whitelist.none());
+		 none = new Cleaner(Safelist.none());
 		 relaxed = new Cleaner(getRelaxedWhiteList());
 	}
 
 	 * https://github.com/github/markup/tree/master#html-sanitization
 	 * @return a loose HTML whitelist
 	 */
-	protected Whitelist getRelaxedWhiteList() {
-		return new Whitelist()
+	protected Safelist getRelaxedWhiteList() {
+		return new Safelist()
         .addTags(
                 "a", "b", "blockquote", "br", "caption", "cite", "code", "col",
                 "colgroup", "dd", "del", "div", "dl", "dt", "em", "h1", "h2", "h3", "h4", "h5", "h6", "hr",