Author: Jake Dallimore
MDL-68309 overrides: clarify inactive overrides help string
http://git.moodle.org/gw?p=moodle.git;a=commit;h=b90f72b304202fc6615e8c55a81fc9c59861a6c1
http://github.com/moodle/moodle/commit/b90f72b304202fc6615e8c55a81fc9c59861a6c1
+ 3.8 en [inactiveoverridehelp,mod_assign]
+ 3.8 en [inactiveoverridehelp,mod_lesson]
+ 3.8 en [inactiveoverridehelp,mod_quiz]