Removed dataset object from tasks, they only interact with part and db now.
Move dbremover from dataset to handler, fix a typo too
Removed a piece that didnt use dedicated method
Broke up dataset in multiple parts
Refactored two similar methods that treat workdir data
Also changed filehandler method to receive same workdir_data in both delete and move methods
Critical moving should be intercepted by a raise Exception
Name change of cariable for clarity
Started changing tests for dataset object