fixes #3225

app/controllers/course/feedback.php

app/controllers/course/room_requests.php

app/controllers/resources/booking.php

app/controllers/resources/export.php

app/controllers/resources/print.php

app/controllers/resources/resource.php

app/controllers/resources/room_planning.php

app/controllers/resources/room_request.php

app/controllers/resources/statistics.php

app/controllers/room_management/planning.php

app/views/course/feedback/_add_edit_entry_form.php

app/views/course/feedback/_entry.php

app/views/course/feedback/_feedback_stream.php

app/views/course/feedback/_new_edit_feedback_form.php

app/views/course/feedback/_results.php

app/views/course/feedback/index.php

app/views/resources/booking/_add_edit_form.php

app/views/resources/booking/edit.php

app/views/resources/booking/index.php

app/views/resources/print/individual_booking_plan.php