Author: Sam Hemelryk
MDL-27058 navigation: Added a setting to control whether user forum links are added
http://git.moodle.org/gw?p=moodle.git;a=commit;h=356a6de3511972be1db86de76db7e7b822b4e2e3
http://github.com/moodle/moodle/commit/356a6de3511972be1db86de76db7e7b822b4e2e3
+ 2.2 en [navadduserpostslinks,core_admin]
+ 2.2 en [navadduserpostslinks_help,core_admin]