Author: Safat
MDL-75318 core: Capability to share course to MoodleNet
http://git.moodle.org/gw?p=moodle.git;a=commit;h=a0238f277df5ccad79dcd9c08031ed9be2e2d194
http://github.com/moodle/moodle/commit/a0238f277df5ccad79dcd9c08031ed9be2e2d194
+ 4.3 en [moodlenet:sharecourse,core_role]