Follow up fix as pointed out by Daniel Beck.

This reverts commit 1fda95b6, reversing
changes made to 0fd39c44.

Daniel Beck confirmed that I wasn't supposed to merge both 1090 and
1091. After discussion with him, I'm taking 1090.

See: https://github.com/jenkinsci/jenkins/commit/1fda95b6aea55cb216074b18bbb34fd8708c64c0#commitcomment-5112285

My recommended fix in response to https://github.com/jenkinsci/jenkins/pull/1093. This does not eliminate nor exclude the need for more generic pluggability, but it would at least address the security concern.

Warn in the UI about short cycles in the day of month field for a crontab, which can have surprising behaviors near the end of a month.

Replaced “New Job” with “New Item” since various plugins (such as cloudbees-folder) add TopLevelItemDescriptor’s which do not produce Job’s.
(Might be feasible to automatically use “Job” or “Item” according to the most specific common supertype of all registered descriptors?)

When downloading a zip file with all of the artifacts, file descriptors
would be opened and never closed. This resulted in many leaked file
descriptors which would only be cleaned up the next time the garbage
collector was run.

For directories with a large number of files, the zip file would be
corrupted because an exception was thrown during the process of creating
the zip file when the process ran out of file descriptors. Jenkins was
then left in a very brittle state as random threads wouldn't be able to
open files or sockets anymore until the garbage collector was run.

purged some messages that are obsolete since
06514d25
localized redirect message

[FIXED JENKINS-18694] Generalizing fix of JENKINS-18678 to include also rename of parent folders, taking advantage of JENKINS-18028 API.

[JENKINS-18224] Relaxing type parameter restriction on TransientActionFactory since useful mixin interfaces like Item do not extend Actionable.

[FIX JENKINS-21303] There is a NPE here that can and does happen for real when an aggresive slave retention strategy interacts with post build triggers that want to do token macro expansion

[JENKINS-18224] Introduced Actionable.replaceAction, allowing getActions() to be deprecated except for subclasses.

Better for SecurityListener.authenticated to take a UserDetails, since some implementations (as for AD) may have additional information.

[FIXED JENKINS-20008] [FIXED JENKINS-18028] [FIXED JENKINS-18680] #1069: support for moving jobs into or out of folders.