anchor.diff:  
             <div class="form-group">
               <div class="row">
  -              
  +
                 <div class="col-md-9">
                   <input type="text" class="form-control">
                 </div>
  
positive.code: 
        <%= render 'shared/error_messages', target: @user %>
  
        <h2>Personal Information</h2>
  
        <%= fields_for @person do |ff| %>
  
negative.code:           <div class="col-md-12">
  
              <div class="form-group">
                <!-- TODO: locale is missing -->
                <%= ff.label :email, 'Email address', class: 'control-label' %>
                <%= ff.email_field :email, class: 'form-control' %>
              </div>
  