Developer credits
Git commits in Moodle 2.4.x by John Beedell
commit 8cb63784e526a72340fc4dd53b8159d09565ff31 Author: John Beedell <j.beedell@open.ac.uk> Date: Thu, 24 Oct 2013 20:31:52 +0800 Tag: v2.4.7 MDL-41473 book: Book html zip import, incorrect url produced for internal linking to other chapters