/**
  * Returns course-specific information to be output immediately below content on any course page
  * (for the current course)
  *
  * @param bool $onlyifnotcalledbefore output content only if it has not been output before
  * @return string
  */
 public function course_content_footer($onlyifnotcalledbefore = false)
 {
     if ($this->page->course->id == SITEID) {
         // Return immediately and do not include /course/lib.php if not necessary.
         return '';
     }
     static $functioncalled = false;
     if ($functioncalled && $onlyifnotcalledbefore) {
         // We have already output the content header.
         return '';
     }
     $functioncalled = true;
     $markup = parent::course_content_footer($onlyifnotcalledbefore);
     if ($this->page->pagelayout == 'incourse' && is_object($this->page->cm)) {
         $markup .= html_writer::start_tag('div', array('class' => 'row-fluid'));
         $markup .= html_writer::start_tag('div', array('class' => 'span12 text-center footer-rts'));
         $markup .= $this->return_to_section();
         $markup .= html_writer::end_tag('div');
         $markup .= html_writer::end_tag('div');
     }
     return $markup;
 }