[FIXED JENKINS-42443] Make f:select display spinner during AJAX requests

* [FIXES JENKINS-42371] - Update remoting to 3.6

Fixed issues:

* [JENKINS-42371](https://issues.jenkins-ci.org/browse/JENKINS-42371) - Properly close the `URLConnection` when parsing connection arguments from the JNLP file. It was causing a descriptor leak in the case of multiple connection attempts. ([PR #152](https://github.com/jenkinsci/remoting/pull/152))

* Remoting 3.6 has been burned

### WinSW changes

The update includes many fixes and improvements, the full list is provided in the [WinSW changelog](https://github.com/kohsuke/winsw/blob/master/CHANGELOG.md). There are several issues referenced in Jenkins bugtracker:

* [JENKINS-22692](https://issues.jenkins-ci.org/browse/JENKINS-22692) - Connection reset issues when WinSW gets terminated due to the system shutdown
* [JENKINS-23487](https://issues.jenkins-ci.org/browse/JENKINS-23487)- Support of shared directories in WinSW
* [JENKINS-39231](https://issues.jenkins-ci.org/browse/JENKINS-39231) - Enable Runaway Process Killer by default
* [JENKINS-39237](https://issues.jenkins-ci.org/browse/JENKINS-39237) - Auto-upgrade of JNLP agent versions on the slaves

### Windows Agent Installer changes

* Adapt the default configurations to pick fixes above
* Slave => Agent renaming where possible

### Jenkins core changes

* Modify the configuration template, reference advanced options
* Enable Runaway Process Killer by default

* Update Windows Agent Installer to 1.7

* Remove the obsolete jenkins-slave.xml file from the core.

Now it is within windows-slave-installer

* Use the deployed Snapshot for CI

* Pick the release version of windows-slave-installer-1.7

[JENKINS-34522] Expose the noun for a item as a task via AlternativeUiTextProvider

[JENKINS-40718] Search by build params in build history widget

Fix relative link in SCM polling admin monitor

kill those pesky hudson temp files

Ignore deletedFolder test on Windows

Windows doesn't allow deleting directories that have a file open inside of them, so this test is invalid on windows.

Minor memory optimisation in label parsing

Noting that ParameterValue.getValue can on occasion return null

Fix JENKINS-41756 - Indecently translated items

Removed false and indecently to slovene translated main menu items.

[FIX JENKINS-41864] Add warning for rare dates

Fix tests on Windows

[FIXED JENKINS-42194] Do not display a warning when no schedules

[FIXED JENKINS-41128] createItem in View not working when posting xml

* Reference redirectors and jenkins.io as much as possible

* Something went wrong, so this is a troubleshooting URL

* More specific redirect URLs

* [JENKINS-31598] upgrade commons-collections due to CVE against v3.2.1

* Fix broken tests