Author: Neill Magill
MDL-64525 comments: Should not be able to delete frozen comments
Before this change in a frozen context a user would be able to delete
their own comments.
After this change a user will only be able to delete their own comments
if they still have the capability to post new comments or the capability
to delete comments from any user.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2987182e16dcd6b2df0f03d70c8b21e2739e4324
http://github.com/moodle/moodle/commit/2987182e16dcd6b2df0f03d70c8b21e2739e4324
+ 4.0 en [nopermissiontodelentry,core_error]