Possibility to modify 1 week timeframe until new samples are about to be sent in

[LArnoldt]

Would be neat, if one could end this one week period early, when sent in all results/ failure feedbacks. On the other hand, it would also be cool if users can specify their own timeframes - for instance two weeks" - The naming of the sameples would then needed to be modified not counting the respective week, but just counting up.