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

Conflicts:
	test/src/test/java/hudson/model/ItemGroupMixInTest.java

replace all deprecated @Bug annotations with @Issue

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

migrate tests from using HudsonTestCase to JenkinsRule

* these are simple tests without Jelly files or actions implemented in the test class

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

Fixed min/max operations in ComputerRetentionWork

[JENKINS-25514] Fixed lock case in FutureImpl

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

Change Jenkins to use a single consistent data-binding field.

Conflicts:
	cli/pom.xml
	core/pom.xml
	test/pom.xml
	war/pom.xml

not using the deprecated GroovyHudsonTestCase anymore

convert tests from JUnit3 to JUnit4

Fix typoo.

* just the two updated classes were affected

document-properties imgs get transparent background

Other 24x24 images have this, changed document-properties.png and .gif to
match.