@dylanfareed => Added management of client applications.

This is a pretty straightforward UI to list, create, edit and destroy Artsy API v2 client applications.

![screen shot 2014-08-26 at 4 05 35 pm](https://cloud.githubusercontent.com/assets/542335/4050875/663a3e98-2d5c-11e4-9494-532a6a37661a.png)

For some reason destroy confirmations aren't working (no popup). Couldn't figure it out, will open an issue.
This is really about the design of the API itself but having the resource type in the embedded node makes for a repetitive pattern in my opinion (tho explicit) that we'll see everywhere, yes?

```ruby
apps = artsy_client.links.applications.embedded.applications
artists = artsy_client.links.artists.embedded.artists
partners = artsy_client.links.partners.embedded.partners
```