Update crawler's unit test data (pretty much revert the regenerated test data in commit 8cb34a0cfe9579ac176bad49e6d4b4f3b99741d7)
Revert "Comment out syntax checking in mediawords_reformat_code.pl"

This reverts commit 9e152e8245d94194bd20506c3ee658f1c30bf6c3.
Make MediaWords::CommonLibs pass the compile test
Add comment explaining why the syntax check is needed