UC-1706: Failure of a local or FTP backup should raise an alarm

-added alarm (BackupRunnerImpl is AlarmProvider)
-improved java logging for all BackupRunner commands, also UI shows backup failed error so Ichanged sipx-archive script to redirect only backup/restore output to dedicated log files
(backup.log, restore.log) but script errors to be handled in java to enable alarm notification and to show script running errors in UI