Feature/carousel

Imported code from bootstrap for carousel, added require bootstrap.js and added carousel.js
> <% Array.wrap(document["art_piece_photos_sms"]).each_with_index do |photo, index| %>
>      <div class=<% if index %>"item"<% else %>"item active"><% end %>
>          <%= image_tag photo %>
>     </div>
> <% end %>
Good!

This cleans it up just a bit more.
```ruby```
<% Array.wrap(document["art_piece_photos_sms"]).each_with_index do |photo, index| %>
  <div class="item <%= "active" unless index %>">
    <%= image_tag photo %>
  </div>
<% end %>
```