Introduced a GeneralResult field for the StructuresOutput to incorporate illustration points in the output: - Updated XMLDoc - Added test object TestGeneralResultFaultTreeIllustrationPoint which represents a GeneralResult hosting a fault tree Related to Issue [WTI-1308] git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@10689 5a3db67b-de53-47b5-99c8-a1c30a6650e2