Author: Andrew Davis
MDL-31460 mod_forum: added some controls to mod/forum/unsubscribeall.php to prevent the removal of subscriptions the user shouldnt be able to delete
http://git.moodle.org/gw?p=moodle.git;a=commit;h=74a37e1deb4932fb25984fb330898d4a45d004ea
http://github.com/moodle/moodle/commit/74a37e1deb4932fb25984fb330898d4a45d004ea
+ 2.3 en [nownotsubscribed,mod_forum]
+ 2.3 en [nowsubscribed,mod_forum]
+ 2.3 en [subscribeenrolledonly,mod_forum]
+ 2.3 en [unsubscribealldone,mod_forum]
+ 2.3 en [unsubscribeallempty,mod_forum]