+ prefixe with Sd, Sw, Sc if only one application context, no prefix otherwise
+ uniformize implicit convention nodeName = Id
+ unit test
  + check nodeName/Id
  + panels are bound to existing deck

Change-Id: I4ccc39008ebf5b5820d09472abfd45d2813e8c96
Reviewed-on: https://gerrit.libreoffice.org/18570Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>