Update hash arrays and add comment.

Use sha256sums hash array instead of md5sums and sha1sums. Add a comment noting
that some of namcap's warnings are spurious. Bump `pkgrel`.
Create python-django-tables2 package
Add comment to PKGBUILD. Update print-version.py

The print-version.py script now prints not only the Factory Boy version, but
also the Python version.
Create python-factory_boy package