WIP: inb4 merge
Merge branch 'master' of https://github.com/nme01/SKM
WIP: putFileFailure works; getFileFailure works; replication catch-up upon slave connection works; possible regressions in registerSlave; re-threaded makeShadow, otherwise the recursive socket times out, RFC
WIP: putFileFailure works; getFileFailure works; replication catch-up upon slave connection works; possible regressions in registerSlave; re-threaded makeShadow, otherwise the recursive socket times out, RFC; UpdateFilesOnServersTask: dlaczego tam było onUpdate->delete, to ja do diabła nie wiem.