Author: Frederic Massart
MDL-8501 mod_forum: Adding links to navigate between discussions
http://git.moodle.org/gw?p=moodle.git;a=commit;h=d78628783b2614886eeb1a2d734fc1ac310632f3
http://github.com/moodle/moodle/commit/d78628783b2614886eeb1a2d734fc1ac310632f3
+ 2.8 en [nextdiscussiona,mod_forum]
+ 2.8 en [prevdiscussiona,mod_forum]