Relates to LBCLASSIC-59 LBCLASSIC-58

- Setting the logback.statusListenerClass system property to the name of a StatusListener 
  class will automatically instantiate an instance of that class and register will the 
  StatusManager currently in use by the logger context. By convention, SYSOUT represents 
  a shorthand for ch.qos.logback.core.status.OnConsoleStatusListener

- documentation to follow