<!DOCTYPE html>
<html lang="<%= t("hyrax.document_language", default: '') %>" prefix="og:http://ogp.me/ns#">
  <head>
    <%= render partial: 'layouts/head_tag_content' %>
    <%= content_for(:head) %>
  </head>

  <body>
    <a href="#skip_to_content" class="sr-only">Skip to Content</a>
    <%= render '/masthead' %>
    <%= content_for(:navbar) %>
    <%= content_for(:precontainer_content) %>
    <div id="content-wrapper" class="container" role="main">
      <a name="skip_to_content"></a>
      <div class="col-xs-12">
        <%= render '/flash_msg' %>
        <%= render_breadcrumbs builder: Hyrax::BootstrapBreadcrumbsBuilder %>
        <% if content_for?(:page_header) %>
          <div class="row">
            <div class="col-xs-12 main-header">
              <%= yield(:page_header) %>
            </div>
          </div>
        <% end %>

        <%= content_for?(:content) ? yield(:content) : yield %>
      </div>
    </div><!-- /#content-wrapper -->
    <%= render 'shared/footer' %>
    <%= render 'shared/ajax_modal' %>
  </body>
</html>

<!DOCTYPE html>
<html lang="<%= t("hyrax.document_language", default: '') %>" prefix="og:http://ogp.me/ns#">
  <head>
    <%= render partial: 'layouts/head_tag_content' %>
    <%= content_for(:head) %>
  </head>

  <body>
    <a href="#skip_to_content" class="sr-only">Skip to Content</a>
    <%= render '/masthead' %>
    <%= content_for(:navbar) %>
    <%= content_for(:precontainer_content) %>
    <div id="content-wrapper" class="container" role="main">
      <a name="skip_to_content"></a>
      <%= render '/flash_msg' %>
      <%= render_breadcrumbs builder: Hyrax::BootstrapBreadcrumbsBuilder %>
      <% if content_for?(:page_header) %>
        <div class="row">
          <div class="col-xs-12 main-header">
            <%= yield(:page_header) %>
          </div>
        </div>
      <% end %>

      <%= content_for?(:content) ? yield(:content) : yield %>
    </div><!-- /#content-wrapper -->
    <%= render 'shared/footer' %>
    <%= render 'shared/ajax_modal' %>
  </body>
</html>

Remove an unnecessary wrapping div
Remove an unnecessary wrapping div

`col-*-*` classes are only supposed to be children of `rows` per
bootlint.  This one was not.
