Author: Huong Nguyen
MDL-75316 core_moodlenet: Create MoodleNet capability
Originally implemented as MDL-75319
http://git.moodle.org/gw?p=moodle.git;a=commit;h=7727745bf79a78403c69207f800b6d47d4e169d3
http://github.com/moodle/moodle/commit/7727745bf79a78403c69207f800b6d47d4e169d3
+ 4.2 en [moodlenet:shareactivity,core_role]