Pagination fix

Adds support for Pagination and upgrades Bootstrap to latest version.
Indentation. Child nodes should be indented four spaces from parent.

```html
<div class="thumbnail">
    <div class="thumbnailImg">
        <a href="{{ path('video', { 'id': video.id }) }}">
            <img src="{{ video.thumbnails.thumbnail[2]._content }}" alt="{{ video.description }}" title="{{ video.title }}" />
        </a>
    </div>

    <!-- Other stuff -->
</div>
```