Found a log file full of IAEs from ModelObjectWithContextMenu.MenuItem due to an (unknown) action with an illegal absolute URI.

- save() is not strictly necessary here. config.xml might be saved later or not - doesn't really matter
- this else branch should only be entered when migrating from very old Hudson instances

java.lang.NullPointerException
	at hudson.model.listeners.RunListener.all(RunListener.java:216)
	at hudson.model.listeners.RunListener.fireFinalized(RunListener.java:196)
	…

Don't check if the job exists if we are going to ignore the result

[JENKINS-15747] Improved fix: not only cap total number of transitive upstream causes but also avoid redundantly storing information about upstream causes listed elsewhere.

Now that we're lazy loading builds, calling getBuildByNumber is not cheap.
So evaluate the 'ignore' flag before trying to load the build.

JENKINS-16573 Getting testing result from non default test mojo failed build.

Observed in a log from 1.466.x:
… hudson.model.Run run
SEVERE: Failed to rotate log
java.io.IOException: …/builds/2013-… is in use
	at hudson.model.Run.delete(Run.java:1260)
	at hudson.model.AbstractBuild.delete(AbstractBuild.java:387)
	at hudson.tasks.LogRotator.perform(LogRotator.java:157)
	at hudson.model.Job.logRotate(Job.java:337)
	at hudson.model.Run.run(Run.java:1503)
	…

Fix French and Danish translations for core update
Thanks

Removed old and outdated todo.txt