Improvements to the UpstreamCause

* Use model-links with context menu
* Show the display name of the linked job
* If the build isn't available, but the job is, still link to the job

[FIXED JENKINS-22080] Braindead logic in author of original fix... corre...

[FIXED JENKINS-22080] NPE if trying to install a plugin from the update ...

[FIXED JENKINS-22080] NPE if trying to install a plugin from the update center and either the update source or the plugin contains a '.' in its name

See https://github.com/kohsuke/winsw/commit/2ffdbde6a92cf582baa4137e7b4de1116a3ca88b

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.

[JENKINS-21984] Disabling cert check on updateDirectlyWithJson since the certificate is now expired, and it is no good to have a test which is known to start failing at a particular time in the future!

Not currently working: https://netbeans.org/bugzilla/show_bug.cgi?id=242428

Introduce VirtualFile.run method to batch together commands.
This should restore pre-ArtifactManager performance for workspace browsing.