making small improvements to calcGraphValues

calcGraphValues:
- If a file was not an outputFile, after the error is written to the
error file, we won’t continue, skipping the printing of run time.
- adding a check that the sum throughput for a test is not ‘0’
- adding some more column headers to the CSV
- script now also adds MEDIAN to the raw
- the “-s” option now works correctly (the path passed to isdir() must
be the raw data path concatenated with the item currently at in the
loop, aka the sub-folder)

CSVCreator:
- removing continue from here too (except that was skipping the
printing of run time)