Add Chinese translation

Add Chinese translation fro PluginManager

Deprecating Memoizer as there is a better replacement in Java 8

QueueTest.taskEquality was flaky

* [JENKINS-47500] unit test for JENKINS-47500 bug

* [JENKINS-47500] return null when the data is just {}

* [JENKINS-47500] added more cases

[JENKINS-47448] Fix JDKInstaller for downloads requiring an Oracle login

Add view or job related Chinese translation

* - add a default implementation doing nothing for the different event on SecurityListener.

* - remove the useless non-implemented method in this inner class.

[JENKINS-47517] Revert the change to the default behavior of Queue.Task.getCauseOfBlockage

Updating JnlpAccessWithSecuredHudsonTest to JenkinsRule

Add Chinese translation

Slave.JnlpJar.getURL did not work in some modes when core had a snapshot dependency on Remoting. (#3069)

[JENKINS-47455] Null safety relating to offline nodes

Deprecate isBuildBlocked & getWhyBlocked in favor of getCauseOfBlockage, which you needed to implement anyway.

[JENKINS-36282] Add link to cc.xml?recursive from build history page

QueueTest.taskEquality was flaky: the original task could run before we got a chance to even try scheduling a second.

[JENKINS-47393] Split CommandLauncher to a plugin

[JENKINS-47416] Do not call ViewGroup.getUrl from migrateLegacyPrimaryAllViewLocalizedName

Review comments from @oleg-nenashev: plugin display name change; CommandLanguage → SystemCommandLanguage.

Fix typos and link in contributing file

Cleanup the code integrated in #2994

[JENKINS-35459] - Prevent Duplicated elements with incorrect URL when using the search on DashBoard View (#2994)

[JENKINS-35459] - Prevent Duplicated elements with incorrect URL when using the search on DashBoard View