noting this change after the fact.

[JENKINS-20023] Make CLI interface help more accesible

Adding ParametersAction#merge(ParametersAction) method with tests.

[FIXED JENKINS-20057] NPE when issuing set-build-display-name CLI command

Enhance the current user link in the header.

If slaves are late to come online after a Jenkins startup, we will see a huge spike of builds as Jenkins attempt to get a workspace for polling.

Merged pull request #986.

[FIX JENKINS-20280] Calculates the order to override variables. This is an improved fix for [JENKINS-19488] and [JENKINS-19926].

This caused the whole changelog to be monospaced.

Describing the previous fix.

This reverts commit c01333c3.
See
https://issues.jenkins-ci.org/browse/JENKINS-20262?focusedCommentId=188404&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-188404
for the discussion why this should be reverted.

Conflicts:

	core/pom.xml

Fixed a bug in bytecode-compatibility-transformer where class file
format prior to 1.49 cannot have the ldc instruction pointing to a class
constant.

Escape hatch to disable bytecode transformation in case this causes other unforeseen problems.

Factoring out sufficiently generic parts of _api.jelly into a page displayed for any AbstractItem (e.g. a Folder).

[JENKINS-11347] [JENKINS-16692] might have been fixed by this, but unclear.

Merge branch 'fix-refused-build-cli-npe' of github.com:marco-miller/jenkins into marco-miller-fix-refused-build-cli-npe

Merge branch 'fix-refused-build-cli-npe' of github.com:marco-miller/jenkins into fork_fix-refused-build-cli-npe

Conflicts:
	core/src/main/java/hudson/cli/BuildCommand.java

New test in hudson/cli/BuildCommandTest.groovy, as well as companion
@TestExtension class, thanks to Jesse' suggestion. This is so that we
test this hereby fixed case of a QueueDecisionHandler Refusing a build,
leading to that null value now checked and handled accordingly.

Commit also includes sorted imports and a few minor indentation fixes,
as well as another (very) minor string change.

Fix typo for Czech (cs) L10N.

Otherwise get e.g.:
java.lang.IllegalArgumentException: java.lang.NullPointerException
	at hudson.model.ItemGroupMixIn.createProject(ItemGroupMixIn.java:253)
	at hudson.model.ItemGroupMixIn.createTopLevelItem(ItemGroupMixIn.java:175)
	at jenkins.model.Jenkins.doCreateItem(Jenkins.java:2827)
	at jenkins.model.Jenkins.doCreateItem(Jenkins.java:308)
	at …
Caused by: java.lang.NullPointerException
	at hudson.model.ItemGroupMixIn.createProject(ItemGroupMixIn.java:251)
	... 65 more

Throw Failure, which FormException would just delegate to when we are not coming from a regular form’s Apply button, as in this case.

https://jenkins.ci.cloudbees.com/job/core/job/jenkins_main_trunk/1369/testReport/junit/hudson.model/AsynchPeopleTest/display/
org.junit.ComparisonFailure: expected:<[display: none;]> but was:<[]>
	at org.junit.Assert.assertEquals(Assert.java:115)
	at org.junit.Assert.assertEquals(Assert.java:144)
	at hudson.model.AsynchPeopleTest.display(AsynchPeopleTest.java:44)
was presumably a race condition.
Could reproduce by adding a Thread.sleep into AsynchPeople.compute.
This patch (with waitForBackgroundJavaScript) avoids that error;
but causes the assertNotNull at the end to fail, for reasons TBD.

No test added in hudson/cli/BuildCommandTest.groovy, as this case is no
longer reproducible with bare Jenkins core and cli. Indeed, one now
need a plugin to extend QueueDecisionHandler, so it can Refuse a build,
hence test this specific null case. Regression tests do all pass still.

1 - Link to user's ID, which is properly escaped.
2 - Display user's full name if possible, otherwise their ID.