Can not copy objects at base level, and multiple objects per TDir

This is by default an equivalent of a ram disk, and has thus serveral advantages. One of them is, that we don't have to worry about deleting the file eventually

fillHistWithNPArray

Can also take bin errors into account

Though we don't use it right now

I don't need to rely anymore on the standard deviations

Will soon be used

Now handled by more powerful DSIDhelper method

accommodated change in related files