* BackgroundFileTransferablePolicy uses ThreadLocal<Worker> now
* support exception handling in BackgroundFileTransferablePolicy
changes:
* ChecksumComputationTask will only calculate one HashType
* added ChecksumRow.dispose()
fix:
* honor convertValueToString() in SelectDialog
* Removed TransferablePolicySupport and related refactoring
* OpenSubtitlesClient: ignore logout status code
* Animated-GIF are animated again
* Unrar process will not hang anymore
* Improved Subscene scraper
* Better scaling for ProgressIndicator
* Added \r and \n to invalid characters
* Some work on SubtitlePanel and related stuff
* Setting putMap/List methods clear existing data first