Comments all around and some updates

'datafinder.py' has been replaced by 'datafinder 2.py', which gives a
more complete summary of a project drive, accounting for folders
without a 'datasize.txt' file and any files in the root.

'data compiler.py' is to be used after running 'datafinder 2.py' a few
times on different drives.  What it does is scan through the .csv files
made by 'datafinder 2.py' and catalogues them all into one .csv file.

'stamper.py' aside from just creating a folder with the day's date,
files in the 'datestamper' folder will now be moved automatically to
the new folder if possible.

Started commenting on all .py files