GDA-4992 Document the <gda:rmi-export /> and <gda:rmi-import /> XML shortcuts in developer guide
SCATTER-365: Update StoredScanMetadataEntry for new ScanStatus notifications
GDA-4249 gda launcher: kill processes in reverse order

* gda servers --start - works as before. It runs:
   1. log server
   2. name server
   3. event server
   4. object server

* gda servers --stop - kills processes, now in reverse order

* gda servers --restart - kills processes in reverse order, then starts them up
  (like --stop followed by --start)
Merge remote-tracking branch 'origin/gda-8.40'
Merge branch 'master' of git://github.com/openGDA/gda-core

* 'master' of git://github.com/openGDA/gda-core:
  GDA-4249 gda launcher: kill processes in reverse order
  remove duplicated class - it should have been moved not copied
  GDA-6005 replace ScanCompletedEvent with new ScanEvent class and broadcast events more frequenelty from scans
  GDA-6005 add improved messages to action bar
  GDA-6005 tidy up action bar and improve scann messages to user in the action bar
  GDA-6005 replace ScanCompletedEvent with new ScanEvent class and broadcast events more frequenelty from scans