Prior to this patch, if a user was in two groups, and an override
existed for both groups in an assignment the override
visually lower on the override list would be displayed on the
overview, whereas the one visually higher would be displayed
in the assignment grading table.
Some unit tests needed to be updated to specify a few extra
bits and pieces on the events to work properly with the
new event vault behaviour.
Part of MDL-55611 epic.
The logic from get_events has now been moved in to our local API
and is used by the event vault to retrieve events, instead of
querying the database directly.
This has the advantage that it deals with overrides and only
returns events for the relevant user.
Part of MDL-55611 epic.
