CC-2633: media monitor crashes on non-ascii files and metadata

- fixed bug for the case where mutagen return None for metadata
- fixed bug for non-ascii files and metadata

python_apps/media-monitor/logging.cfg

@@ -1,5 +1,5 @@
 [loggers]
-keys=root
+keys= root,notifier,metadata
 
 [handlers]
 keys=fileOutHandler
@@ -11,12 +11,22 @@ keys=simpleFormatter
 level=DEBUG
 handlers=fileOutHandler
 
+[logger_notifier]
+level=DEBUG
+handlers=fileOutHandler
+qualname=notifier
+
+[logger_metadata]
+level=DEBUG
+handlers=fileOutHandler
+qualname=metadata
+
 [handler_fileOutHandler]
 class=logging.handlers.RotatingFileHandler
 level=DEBUG
 formatter=simpleFormatter
-args=("/var/log/airtime/media-monitor/media-monitor.log", 'a', 1000000, 5,)
+args=("/var/log/airtime/media-monitor/media-monitor.log", 'a', 10000000, 5,)
 
 [formatter_simpleFormatter]
-format=%(asctime)s %(levelname)s - [%(filename)s : %(funcName)s() : line %(lineno)d] - %(message)s
+format=%(asctime)s %(levelname)s - [%(threadName)s] [%(filename)s : %(funcName)s()] : LINE %(lineno)d - %(message)s
 datefmt=