Social flow block

The Social Flow proposes a view on most frequent actions in courses to student and teachers on the Moodle dashboard. The Social Flow view is based on two plugins: logstore_socialflow that logs the events to the database and makes all data treatements with a performant approach; you need to install this dependency first; and block_socialflow that displays the Social Flow data on the dashboard. The analytics approach is optimised by working exclusively with relevant log data and by using intermediate tables, which are updated every night, to store data relating to active events.