Manually fix cases where 3 args were being passed in the plural, which no longer works.
Work-in-progress rewrite of the fix_file handlers.
Rewrote a number of exercises to better handle pluralization (reducing the number of pluralization terms to only one per extracted string).
Use the exercise fixer script to fix all the exercises.
Remove a bunch of words from word-problems that don't need to be pluralized any more. Also remove groupVerb, as it's no longer used.
Fix number of files output from script.
Move linting stuff off into a new file and add some comments.
Remove linting stuff from extract_strings.py and update the Makefile.
Revert earlier run of the linter against the exercises.
Fix some additional, ambiguous, i18n cases.
Re-fix the exercises after fixing a number of bugs in the linter.
Finish documenting the lint_i18n_strings.py script.
Fix some linting issues.