Revert "No longer build or check in the fake-language .po files (boxes.po, etc)."

I couldn't get this approach to work.  We'll just have to deal with a
big boxes.po.

This reverts commits:
    cfedf35cc7cfa1307eac686721bcd4751d45c283
    ee83948a46738445685b4f7b5c222cf945c3681b
    844c6c0fcecbb19aa0a665438fb8611bef3da57a

Auditors: james