learningequality/ka-lite — pull request #1261 by aronasorman (2013-12-10 22:30:43+00:00)
Title: Process only relevant KA exercise po files

Does 2 things:
1. Filters out non-math exercise related po files
2. on each exercise po file, retain message blocks that are only metadata; remove those that are about the exercise itself. (We fetch exercise data directly from the KA website)