[JENKINS-18435] Tell browsers not to cache or try to autocomplete forms

* no longer hard-code the icon for the executor panel

[FIXED JENKINS-36775]

* add documentation to Computer.java for custom icons

* add recommended implementation to the javadoc

* [JENKINS-34468] CLI command offline-node extracted from core to CLI

offline-node extended to accept multiple node names
offline-node covered by test-cases

* Fixed translation properties

* Fixes based on Oleg's comments

* Fixed HelpCommandTest test-case

* Minor fixes

* Uses Matchers.instanceOf everywhere instead of Java operator instanceof

* [JENKINS-36666] Properly report the reason for a failed call to Task.getDisplayName.

* [JENKINS-36666] Even without passing fatal=false to @Initializer, recover gracefully from a LinkageError in a task.

* Comment.

* [JENKINS-36748] Not process null Triggers

* [JENKINS-36748] Specify job

* [JENKINS-36748] Correctly check NullPointerException

Remove API restriction on UserDetailsCache

[JENKINS-35493] Introduce a UserDetails cache

Followup to #2446 to remove the API restriction
so that the first fix can potentially be picked
for LTS while this stays in the weekly release.

[JENKINS-36193] Raise exception when trying to build a job that is disabled

[JENKINS-36476] Underprivileged users could not use the default value of a password parameter (#2454)

* [FIXED JENKINS-36476] Do not even send the default password in encrypted form; leave the text field blank, and apply the default upon submission.

* [JENKINS-36476] Use a special token, not the empty string, as the marker for the default value.

* [JENKINS-36592] Prevent NPE in BlockedBecauseOfBuildInProgress#getDescription() in the case of race condition

* [JENKINS-36592] - Address comments from @jglick

* [JENKINS-36592] - Fix wording. Attempt #2

* Fixed JENKINS-33201 [Java JSON exception with an empty parametrized
build.]

* FIXED JENKINS-33201. Changed to FormException instead of Failure

* That fix was never in a released version.

So it cannot have been reverted.

* Lowercase i for consistency

* Remove the concept of yanking dead executors.

* Another unnecessary call to doYank.

* [FIXED JENKINS-27530] Jenkins.reload must also reload the Queue to ensure that every Queue.Item.task corresponds to a live Job, lest nextBuildNumber be bogus.

* [JENKINS-27530] Noting #2439 & #2440.

* FIXED JENKINS-33201. Changed to FormException instead of Failure

* [FIXED JENKINS-33201 .FormException is thrown if parameterDefinitions are not available .

* Changing one more Tab to Space

* Moved checkForEmptyParameters to Job class

* [JENKINS-36593] - ItemCategory#MIN_TOSHOW should be restricted

* [JENKINS-36593] - Add Javadoc

[FIXED JENKINS-36594] - CauseOfInterruption.UserInterruption#getUser() should not create new users (#2450)

* CauseOfInterruption.UserInterruption#getUser() should not create new users if the user gets deleted before the cause printing call

* [JENKINS-36594] - Print raw username if we cannot create MasterHyperlinkNote

* [JENKINS-36387] Catch exception when scm retry count field is empty.

* Add test for JENKINS-36387

* [JENKINS-36387] Move test in correct place

* [JENKINS-36387] Reproduce actuall behaviour

[JENKINS-36629] Optimization for recent build stability calculation

Setting autocomplete to "off" will tell browsers not to try to autofill
forms during history navigation. Since this seems to be a prominent
problem in Jenkins I feel it is best to have it default to "off" and let
individual inputs or pages opt-in to enable it instead
to indicate they can handle it.
The standard login page does not seem to use the taglib form tag
so it is not affected, even so, all modern browsers ignores
the autocomplete attribute on username and password fields anyway.