* Save CM editor when it loses focus to ensure that test is saved back to textarea
* Turn on again CM editor for shell scripts

Attempt to do it in pure CSS ala 3e9cdcbc failed so using CSS and JS combo.

* to simplify the static import and test use Hamcrest to compare arrays
* no need to box boolean[] to Boolean[] when using Hamcrest

* that's a common practice so do it consistently in all tests

If a project action fails to load we should log the project action and continue to load the project.

[JENKINS-22811] Folder loading can break when an item inside the folder fails to load or throws an Exception.

Jenkins was failing to log exceptions from raw Runnable/Callable sent to Timer (without using SafeTimerTask, PeriodicWork, etc.).

As previously implemented, nextCheck would always happen in 1 minute, regardless
of what the RetentionStrategy.check() returned.

[FIXED JENKINS-10944] [FIXED JENKINS-24519] If makeBuildable fails on a FlyweightTask, keep it in queue.

Plenty of plugins assume that a FlyweightTask will behave in a certain way
and might break if this feature were simply disabled.

This expects that any mechanism that keeps builds handles their disappearance gracefully.