Added unittests for the TinderboxScraper (#161)

This PR addresses issue #161

I created three builds per platform and where important, the files are different in size, so that an md5 sum would give different results.

I added in both firefox and thunderbird tinderbox builds a timestamp_conversion.txt file for everyone's convenience in case more test cases need to be created.

I apologise for the sheer amount of files with 'Lorem ipsum...' content ;)