DSS-399: Closing DSSDocument streams
Cosmetic changes
Merge remote-tracking branch 'origin/develop' into develop
DSS-400: Detection of detached signatures improved
DSS-391: Missing revocation data
Missing revocation data
DSS-396: DSSReference: error in copy constructor
DSS-401: Provide Static Validation Policy (perf improvement)
DSS-402: Validation constraint simplification