anchor.diff:  
   <% if @std_courses_phantom.length > 0 %>
     <h3>Phantom Students</h3>
  -  <% if @mission.single_question? and @mission.coding_questions.first %>
  +  <% if @mission.single_question? and @mission.questions.coding.count > 0 %>
       <input type="button" id="dump_sub_phantom" class="btn dump_sub" value="Download Submissions">
     <% end %>
   
  
positive.code:         <% end %>
          <td><%= std.get_my_tutor_name %></td>
          <td><%= sub ? sub.status.capitalize : '<span class="not-started">Not Started</span>'.html_safe %></td>
          <td><%= (sub and sub.final_grading) ? sub.final_grading.total_grade : 0 %>/ <%= @mission.max_grade %></td>
        </tr>
    <% end %>
    </tbody>
  
negative.code:         <% sub = @submissions.select {|sub| sub.std_course == std }.first %>
          <tr>
            <% if sub %>
              <td><a href="<%= course_assessment_mission_assessment_submission_path(@course, @mission, sub) %>"><%= std.name %></a> </td>
            <% else %>
              <td><%= std.name %></td>
            <% end %>
  