ScriptNode : Fix bug that baked string substitutions into serialisations
ScriptNode : Fix bug that baked string substitutions into serialisations

hradec/gaffer,hradec/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,johnhaddon/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,ImageEngine/gaffer,lucienfostier/gaffer,johnhaddon/gaffer,GafferHQ/gaffer,johnhaddon/gaffer,ImageEngine/gaffer,boberfly/gaffer,ImageEngine/gaffer,boberfly/gaffer,johnhaddon/gaffer,lucienfostier/gaffer,andrewkaufman/gaffer,boberfly/gaffer,GafferHQ/gaffer,hradec/gaffer,appleseedhq/gaffer,hradec/gaffer,GafferHQ/gaffer,andrewkaufman/gaffer,hradec/gaffer,boberfly/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,ImageEngine/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,appleseedhq/gaffer,johnhaddon/gaffer