Author: Dongsheng Cai
MDL-24540, fixed comments UI for not logged in users
http://git.moodle.org/gw?p=moodle.git;a=commit;h=df796bf0ec2e533c931c8e300ba9d8a796fb74a6
http://github.com/moodle/moodle/commit/df796bf0ec2e533c931c8e300ba9d8a796fb74a6
+ 2.0 en [commentsrequirelogin,core]
+ 2.0 en [courselegacyfiles_help,core]