Notification of string changes

Author: David Mudrak
Removing obsolete permission explanation strings


http://git.moodle.org/gw?p=moodle.git;a=commit;h=fc2b54691a24730ab9adf588fe10d0e76edbee2d
http://github.com/moodle/moodle/commit/fc2b54691a24730ab9adf588fe10d0e76edbee2d

- 2.0 en [explainpermission,core_role]
- 2.0 en [explainpermissionsinfo,core_role]