Initial changes to support RemoveFailedNode
Merge pull request #692 from cdjackson/zwave-xstream

Change XStream library from version 1.4.5 to 1.4.6
Merge branch 'master' into master-dev

* master:
Update product file to reflect NZ codes for FGS221
Merge branch 'zwave-setup' into master-dev

* zwave-setup:
  Initial changes to support RemoveFailedNode
zwave-cfg: Tidy code to remove unused imports
Add delete method to NodeSerialiser to allow the file for a deleted node to be removed.
zwave-cfg: Add GE switch/dimmer to product list.
zwave-cfg: Changes to support deleting failed nodes.
zwave-setup: Initial testing of RemoveFailedNode