Author: Andrew Nicols
MDL-47365 mod_forum: Add permalink to forum posts
http://git.moodle.org/gw?p=moodle.git;a=commit;h=75debb4dbb589fbc0c7b1cf81de20602faa29b9c
http://github.com/moodle/moodle/commit/75debb4dbb589fbc0c7b1cf81de20602faa29b9c
+ 3.1 en [permalink,mod_forum]