make LuceneSearcherProbe more resilient to exceptions
use ISO format for LucenceSearcherProbe output
Only output LuceneSearcherProbe results as info
Merge pull request #8 from atlasapi/fix-lucene-probe

Make LuceneSearcherProbe more resilient to exceptions
don't crash on start-up is priority channel group is not present
Fix build - MongoPersonStore now needs an audit logger
Merge branch 'master' into stage