Re-build the mechanism to keep the session alive #10
Description
In Moodle 3.8 / MDL-34498, Moodle Core changed the Ajax Endpoint for keeping sessions alive, which this plugin used up to then, to a real webservice (see moodle/moodle@4e1ee0b).
To keep things working, the removed script is shipped within this plugin since then (see af992c1).
However, it would be good to re-build the mechanism to keep the session alive to use real Moodle webservices as well