[JENKINS-19544] Whether or not we manage to save an object with old data, be sure to remove it from the list, and continue with other objects.
Otherwise a bug like JENKINS-20950 can prevent *anything* from being saved, and holds references to all the old data.
[FIXED JENKINS-19544] When OldDataMonitor is reported a Run, just remember the ID rather than holding a strong reference.
restored messages that got lost because of changed message key
updated German localization