Notalib/LYT — pull request #599 by saebekassebil (2013-11-13 14:35:39+00:00)
Title: Lowercase all resources in book.resources

This is not following the standard strictly, but since some books are
produced with filename case-issues, this fix is sadly necessary. It's very
unlikely that two files with the same filename but different casing will
occur.

Fixes #561, #580