anchor.diff:    <div class="span1"><h3>Milestone</h3></div>
     <div class="span3">
       <h4>Title</h4>
  +  </div>
  +  <% if !milestone.is_virtual? %>
  +  <div class="span2">
  +    <h4>Start Date</h4>
  +  </div>
  +  <div class="span2">
  +    <h4>End Date (Optional)</h4>
  +  </div>
  +  <% end %>
  +</div>
  +<div class="row">
  +  <div class="span3 offset1">
       <% if !milestone.is_virtual? %>
         <input name="milestones[<%= milestone.id %>][title]" type="text" class="span3" required="true" value="<%= milestone.title %>">
       <% else %>
         <h4><%= milestone.title %></h4>
       <% end %>
     </div>
  +  <% if !milestone.is_virtual? %>
     <div class="span2">
  -    <% if !milestone.is_virtual? %>
  -    <h4>Start Date</h4>
       <div class="datepicker input-append date">
         <input name="milestones[<%= milestone.id %>][start_at]" type="datetime"
          value="<%= milestone.start_at.strftime('%d-%m-%Y') %>" 
  
positive.code:         <i data-time-icon="icon-time" data-date-icon="icon-calendar"></i>
        </span>
      </div>
      <% end %>
    </div>
    <div class="span2">
      <% if !milestone.is_virtual? %>
      <h4>End Date (Optional)</h4>
      <div class="datepicker input-append date">
        <input name="milestones[<%= milestone.id %>][end_at]" type="datetime" 
        <% if milestone.end_at %> value="<%= milestone.end_at.strftime('%d-%m-%Y') %>" <% end %> 
  
negative.code:         <i data-time-icon="icon-time" data-date-icon="icon-calendar"></i>
        </span>
      </div>
    </div>
  
    <div class="span1">
      <div class="pull-right">
      <%= render :partial => 'layouts/delete_confirm', locals: { :path_to_item => course_lesson_plan_milestone_path(@course, milestone) } %>
      </div>
    </div>
    <% end %>
  </div>
  
  <% if (milestone.entries.select { |m| not(m.is_virtual?) }).length > 0 %>
  