MDL-34055 add bulk DB->insert_records() method
MDL-41285 block_recent_activity: behat test for structural changes
MDL-41285 blocks: recent activity does not use log table

instead it defines it's own table and stores the necessary events
MDL-41285 blocks: capabilities to view structural changes in recent activities
Merge branch 'wip-MDL-41285-master' of git://github.com/marinaglancy/moodle