[FIX JENKINS-8358] Use DISABLED_ANIME icon while building
[FIXED SECURITY-133] Restrict access to SCMTrigger status page

The page shows the names and URLs of all jobs currently busy with
polling. This includes jobs users might not regularly be able to
access and might therefore reveal otherwise hidden information.
[FIXED JENKINS-22699] Add option to archive only if successful
[FIXED JENKINS-23526] Tolerate 'null' result when used creatively
Break links inside pre tags

to prevent page from horizontal scrolling.
Update style.css
[FIXED JENKINS-19691] - Added the hudson.model.Queue.cacheRefreshPeriod option

The option allows to manage the refresh period of the internal queue cache.

Signed-off-by: Oleg Nenashev <o.v.nenashev@gmail.com>
[FIXED JENKINS-22769] ItemListener callbacks should run as SYSTEM since they sometimes do ACL-checked calls.
Conflicts:
	changelog.html
[FIXED JENKINS-25074] Make sure to call Job.getBuildHealthReports just once per t:buildHealth render.
[FIXED JENKINS-23228]

Documented this feature and integrated a newer version of Stapler.

I took the opportunity to reorder the content in the section, so that
the tree parameter becomes the main subject.

At this point, the depth parameter should be only used in a limited
circumstance, so it should be treated as such.

Conflicts:
	changelog.html
	core/pom.xml