5010 redesign product form

```erb
<% ['height', 'width', 'depth'].each do |measurement| %>
  <span id="show_product_variants_attributes_<%= variant_counter %>_<%= measurement %>" class="field-display">
    <%= number_with_precision(variant.send(measurement), :precision => 2) %>
  </span><%= measurement.chars.first %>
  &times;
<% end %>
```