<li data-reorder-id='<%= node.id %>'>
  <%= simple_form_for [main_app, node], remote: true, html: {'data-type': 'json'} do |f| %>
    <div class="panel panel-default">
      <div class="panel-heading">
        <div class="order-title">
          <%= f.input :title, as: :string, input_html: { name: "#{f.object.model_name.singular}[title][]", class: "title" }, value: node.to_s, label: false %>
        </div>
        <div class="file-set-link pull-right">
          <%= link_to contextual_path(node, @presenter), title: "Edit file" do %>
            <span class="glyphicon glyphicon-edit" aria-hidden="true"></span>
          <% end %>
        </div>
        <% if node.respond_to?(:page_title) %>
          <div class="order-filename">
            <em title="<%= node.page_title %>">(<%= truncate(node.page_title, length: 29) %>)</em>
          </div>
        <% end %>
      </div>
      <div class="panel-body">
        <div class="text-center thumbnail">
          <%= render "file_manager_thumbnail", node: node %>
        </div>
        <div class="attributes">
          <%= render "file_manager_attributes", node: node, f: f%>
        </div>
        <div class="spacer">
        </div>
      </div>
    </div>
  <% end %>
</li>

<li data-reorder-id='<%= node.id %>'>
  <%= simple_form_for [main_app, node], remote: true, html: {'data-type': 'json'} do |f| %>
    <div class="panel panel-default">
      <div class="panel-heading">
        <div class="order-title">
          <%= f.input :title, as: :string, input_html: { name: "#{f.object.model_name.singular}[title][]", class: "title" }, value: node.to_s, label: false, hint: false %>
        </div>
        <div class="file-set-link pull-right">
          <%= link_to contextual_path(node, @presenter), title: "Edit file" do %>
            <span class="glyphicon glyphicon-edit" aria-hidden="true"></span>
          <% end %>
        </div>
        <% if node.respond_to?(:page_title) %>
          <div class="order-filename">
            <em title="<%= node.page_title %>">(<%= truncate(node.page_title, length: 29) %>)</em>
          </div>
        <% end %>
      </div>
      <div class="panel-body">
        <div class="text-center thumbnail">
          <%= render "file_manager_thumbnail", node: node %>
        </div>
        <div class="attributes">
          <%= render "file_manager_attributes", node: node, f: f%>
        </div>
        <div class="spacer">
        </div>
      </div>
    </div>
  <% end %>
</li>

Remove hint from file manager members
Remove hint from file manager members

The hint affects the height of the boxes, which breaks flow, and really doesn't make sense without the label.
