- Jest was chosen because it's the most feature-complete one
- Fixes tests so that they would work with the new JS modules
- Removed the gulpfile unused test dependencies
- Enabled tests in maven

- It was previously done using cli, which could fail on windows
- Added plugin to clean up webpack build folder
- Cleaup on the package.json

- moves the fonts back to the war/src/main/webapp/css folder

[JENKINS-60634] Define $WORKSPACE_TMP for (non-Pipeline) builds

Fix typos & spelling in Javadoc and WebUI

[JENKINS-40228] Remove Enable Security checkbox in the Global Security configuration (follow-up)

[JENKINS-60641, JENKINS-60644] incorrectly converted AntClassLoader.loadResource to a Java 5 for-loop

Without fix, Jenkins startup fails:
java.lang.NullPointerException
	at java.io.Reader.<init>(Reader.java:78)
	at java.io.InputStreamReader.<init>(InputStreamReader.java:113)
	at org.apache.commons.io.IOUtils.copy(IOUtils.java:2440)
	at org.apache.commons.io.IOUtils.toString(IOUtils.java:1084)
	at io.jenkins.plugins.loads_resource.Main.stuff(Main.java:36)

[JENKINS-60449] Prevent endless recursion in SezpozModule.resolve

Merge branch 'JENKINS-40228' of github.com:ksenia-nenasheva/jenkins into enable-security-JENKINS-40228

Fixed Spotbugs Switch related issues and added Suppresses

[JENKINS-60625] Prevent Jenkins page rendering from being blocked when the update center data parsing is in progress

* removed redundnat null checks of nonnull values

* integrated suggestions

* removed local jenkins variable as suggested

* replaced null check with check for error object

* IntelliJ/Java: Duplicate declaration

AntClassLoader.getUrl

* Add missing import for annotation

* Switch from Vector to ArrayList<File>

* Drop inferable File

* Use for (File pathComponent : pathComponents) sugar

* Accept generic container type for getUrl
Co-Authored-By: NOleg Nenashev <o.v.nenashev@gmail.com>
Co-authored-by: NOleg Nenashev <o.v.nenashev@gmail.com>

* Add new module optional-depender and a new failing test

* Variant plugin is a dependency of optional-depender

Optional-depender contains the following class

@OptionalExtension(requirePlugins = {"dependee"})
public class OptionalDependerExtension {
      private static void foo(Dependee d) {

      }
}

* [JENKINS-60449] Move plugin initialization at the end, keep only one extension refresh

* Improve logic to detect classloading issues

Inspect all declared constructors/methods/fields recursively to exclude
failing classes from Guice rather than have Guice explode.

This also fix the failing test, but the previous commit is still better
because it avoids an extra Jenkins.get().refreshExtensions() call.

* Only test resolveClass method if the classloader is not the bootstrap one