code: function(section, pageFields, submittedFields) {
    var thisSection = section;
    var fieldsInSection = sectionUtils.getFieldsInSection(section._id, pageFields);
  
    var renderData = [];
    var addedSectionBreaks = false;
    var idsOfFieldsInTheSection = [];
  
    _.each(fieldsInSection, function(field) {
      idsOfFieldsInTheSection.push(field._id);
  
      var thisFieldInSection = _.filter(submittedFields, function(subField) {
        return subField.fieldId._id === field._id;
      });
  
      if (!addedSectionBreaks) {
        _.each(thisFieldInSection, function(field, index) {
          var sectionForIndex = _.clone(thisSection);
          sectionForIndex.idx = index + 1;
          field.sectionIndex = field.sectionIndex || 0;
          renderData[field.sectionIndex] = [sectionForIndex];
        });
        addedSectionBreaks = true;
      }
  
      _.each(thisFieldInSection, function(field) {
        field.sectionIndex = field.sectionIndex || 0;
        renderData[field.sectionIndex].push(convertFieldToFormFormat(field));
      });
    });
    renderData = _.flatten(renderData);
  
    return {renderData: renderData, fieldsInSection: idsOfFieldsInTheSection};
  }
docs: Builds and returns data used to render repeating sections.
  @param section
  @param pageFields
  @param submittedFields
  @returns {{renderData: Array, fieldsInSection: Array}}