Add word-count to log in Translation Comparison step

[ysavourel]

From Ruben (https://groups.yahoo.com/neo/groups/okapitools/conversations/messages/4744)

I have one suggestion for future development, in case it is useful. When appending theaverage results to a log, would it be possible to also include word count in log file. Use case would be as follows:

You have a bunch of files that have been MTed but only want to check the comparison in detail for the files with the worst edit distance. Having the word count is useful because edit distance is less reliable for files with a small word count.