restructered common process steps
adapted AddFileProcess
adapted DeleteFileProcess
adapted UpdateFileProcess
adapted GetFileListProcess
relocated UpdateFileTest
cleanup in contexts
wrong comment
adapted MoveFileProcess
adapted RecoverFileProcess
adapted ShareProcess
get rid of multiple denying message handlers
HybridEncryptedContent is now also BaseVersionedNetworkContent
adapted DownloadSmallFileProcess
adapted DownloadLargeFileProcess