anchor.diff:    ] %>
   <% end %>
   
  -<% # Allow TA submission collection only if all the submissions are
  -   # assignment to exactly one TA. %>
  -<% if @current_user.ta? and @assignment.past_collection_date? and
  -      @groupings.all? {|grouping| grouping.get_ta_names.size == 1} %>
  -  <% @heading_buttons.push(
  -    {
  -      link_text: t('collect_submissions.collect_ta'),
  -      link_path: collect_ta_submissions_assignment_submissions_path(@assignment),
  -      html_options: { confirm: t('collect_submissions.results_loss_warning') }
  -    }) %>
  -  <span class='menu_bar'></span>
  -<% elsif @current_user.ta? and @assignment.past_collection_date? %>
  -  <% @heading_buttons.push(
  -  {
  -    link_text: t('collect_submissions.collect_ta'),
  -    link_path: '#',
  -    html_options: {
  -                    id: 'disable',
  -                    title: t('collect_submissions.disable_collect')
  -                  }
  -  }) %>
  -<% end %>
  -
   <% if all_assignments_marked? %>
     <% @heading_buttons.push(
     {
  
positive.code:     link_text: t('browse_submissions.download_groupings_files'),
      link_path: download_groupings_files_assignment_submissions_path(
                 groupings: @groupings),
      html_options: {confirm: t('collect_submissions.marking_incomplete_warning')}
    }) %>
  <% end %>
  
  
negative.code:     {
        link_text: t('collect_submissions.collect_all'),
        link_path: collect_all_submissions_assignment_submissions_path(@assignment.id),
        html_options: { data: { confirm: t('collect_submissions.results_loss_warning') } }
      },
      {
        link_text: t('browse_submissions.csv_report'),
  