Feature/carousel

Imported code from bootstrap for carousel, added require bootstrap.js and added carousel.js
```ruby, html
<% Array.wrap(document["art_piece_photos_sms"]).each_with_index do |photo, index| %>
    <div class="item active"><% unless index %>
    <div class="item">
       <%= image_tag photo %>
    </div>
<% end %>
```