StEP 1552 closes #1552

app/controllers/admin/courses.php

app/controllers/api/oauth2/oauth2_controller.php

app/controllers/blubber.php

app/controllers/consultation/admin.php

app/controllers/course/basicdata.php

app/controllers/course/details.php

app/controllers/course/enrolment.php

app/controllers/course/go.php

app/controllers/course/members.php

app/controllers/course/statusgroups.php

app/controllers/course/studygroup.php

app/controllers/debugbar.php

app/controllers/login.php

app/controllers/logout.php

app/controllers/media_proxy.php

app/controllers/my_courses.php

app/controllers/my_institutes.php

app/controllers/oer/endpoints.php

app/controllers/registration.php

app/controllers/search/globalsearch.php