Author: adrian@moodle.com
MDL-20627 user - Fixed viewing permission of email when sending group messages.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=905617c12fe333ef402c8f05b0e7c37b03d662be
http://github.com/moodle/moodle/commit/905617c12fe333ef402c8f05b0e7c37b03d662be
+ 2.0 en [emaildisplayhidden,core]