Author: Dongsheng Cai
MDL-23308, change course files link name
http://git.moodle.org/gw?p=moodle.git;a=commit;h=4153e01aeb7bf075904ef63c3edb0f9062a1277b
http://github.com/moodle/moodle/commit/4153e01aeb7bf075904ef63c3edb0f9062a1277b
+ 2.0 en [courselegacyfiles,core]