fixes #4221

app/controllers/admin/user.php

app/controllers/course/dates.php

app/controllers/course/wiki.php

app/controllers/oer/endpoints.php

app/controllers/quicksearch.php

app/views/activityfeed/configuration.php

app/views/admin/autoinsert/manual.php

app/views/admin/cronjobs/schedules/index.php

app/views/admin/user/edit.php

app/views/file/choose_destination.php

lib/classes/ForumEntry.php

lib/classes/exportdocument/ExportPDF.class.php

lib/classes/librarysearch/LibraryDocument.class.php

lib/phplib/Seminar_Auth.class.php

lib/visual.inc.php

templates/filesystem/group_folder/edit.php

templates/filesystem/topic_folder/edit.php