Server refactor

Lots of goodies:

 - new Server Styles!!
 - "Create Application" page
 - Screencast change - "House" is now the website, instead of Susan.  This makes more sense (we can chat if you don't like it... but try out the demo and I think it'll make sense)
 - Refactors "client/" out of Client URL and Twig Paths

How to check it out:

 1. update
 2. create two virtual hosts, one for `knp-oauth-client` and one for `knp-oauth-server`

```
#
# OAuth2 KNP Client/Server
#
<VirtualHost *:80>
    ServerName knp-oauth-client
    DocumentRoot "/Library/WebServer/knp-oauth/client-finish/web"
    DirectoryIndex index.php
    # ...
</VirtualHost>

<VirtualHost *:80>
    ServerName knp-oauth-server
    DocumentRoot "/Library/WebServer/knp-oauth/server-finish/web"
    DirectoryIndex index.php
    # ...
</VirtualHost>
```

 3. browse to `http://knp-oauth-server`, create an application, and fill it out with "redirect_uri" as `http://knp-oauth-client/receive_authcode`.
 4. Profit!