Fix imports for Javadoc.
[JENKINS-19446] Saving Jenkins configuration in onRenamed/onDeleted is often overkill.
This is already handled by ListView.Listener (other kinds of views are now responsible for their own listeners).
And handled better—if there are no actual changes
(because you have no such views, or they do not mention this job), there is no need to save.
Also moving the actual saving in those remaining cases out of the lock on the ListView itself, just in case.
[FIXED JENKINS-22001] Simpler fix of JENKINS-19446 that does not introduce asynchronous behavior.