All the setup/teardown/pre/post/conditions template methods
now are required to return void. This was warned with phpunit 7
and now is enforced.
At the same time, fix a few wrong function names,
provider data and param types, return statements...
When permissions are lacking and the course module competencies could
not be migrated we must keep the course competency to preserve the
original competency in the course module.
Eloy Lafuente (stronk7)