Use fake slugs

[jacksonrayhamilton]

Use urls like /projects/15/activitybot-challenge and use the first argument as the lookup id for a model.

Also, if a user visits /projects/15, he should be 301-redirected to /projects/15/activitybot-challenge.

Also:

// Urls dynamically-generated by Cake, like with this code...
$this->Html->link(
  h($post['Post']['title']),
  array('action' => 'view', $post['Post']['id'])
)

<!-- ...should output this: -->
<a href="/projects/15/activitybot-challenge">ActivityBot Challenge</a>

Also, slugs do not necessarily need to be unique anymore. We may remove their unique constraints from their Model files and their MySQL rows.