Author: Marina Glancy
MDL-4782 course: Allow activities in the "stealth" mode
Add field 'visibleoncoursepage' to the course_modules table
Add site-wide setting for turning on stealth mode availability
Add callback for "stealth" mode support in the course formats
Change display of modules/sections availability on the course page
http://git.moodle.org/gw?p=moodle.git;a=commit;h=8341055eb47147a4cf3946c24f1a6f17be10a1cc
http://github.com/moodle/moodle/commit/8341055eb47147a4cf3946c24f1a6f17be10a1cc
+ 3.3 en [allowstealthmodules,core]
+ 3.3 en [allowstealthmodules_help,core]
+ 3.3 en [hiddenoncoursepage,core]
+ 3.3 en [hideonfrontpage,core]
+ 3.3 en [makeavailable,core]
+ 3.3 en [makeunavailable,core]
+ 3.3 en [sectionactionnotsupported,core]