Added option to perform fast-move as a pre-block action (or not). By default fast-move will be done after blocking, but before directory scanning. (CH-223)
Performed de-duplication of the progress data and stats data (i.e. current file processed size was available in both progress data and stats data and not always updated simultaneously). There is no separate progress data anymore - everything is now placed in the stats data. (CH-124)
Rewritten statistics handling for sub tasks, tasks and task manager (this commit introduces some issues that needs to be further fixed). Only basic tests performed (!)