foreach ($shifts as $shift) {
        $shifts_table_entry = [
            'timeslot' => '<span class="glyphicon glyphicon-time"></span> ' . date("Y-m-d H:i", $shift['start']) . ' - ' . date("H:i", $shift['end']) . '<br />' . Room_name_render(Room($shift['RID'])),
            'title' => ShiftType_name_render(ShiftType($shifttype_id)) . ($shift['title'] ? '<br />' . $shift['title'] : ''),
            'needed_angels' => ''