Reducing message from stop() to FINE.
Normally this is only printed during functional tests or during in-process restart.
In neither case do we really want to see a log message (i.e. two lines of text) for each plugin in the system being stopped.
Merge branch 'master' of github.com:jenkinsci/jenkins
Merge branch 'master' of github.com:jenkinsci/jenkins
Apparently unused copy of something already in hudson.model.Messages.
Improved descriptions of permissions.