Git commits in Moodle 2.7.4 by Heiko Schach

commit 333c3dbf1d399409cb4d0cebed092a462f787b2b
Author: Heiko Schach <heiko.schach@helsinki.fi>
Date:   Fri, 21 Nov 2014 15:40:45 +0800
Tag:    v2.7.4

MDL-48036 course: change multilang cache key