Removes deprecated Express methods

#### What's this PR do?
Removes methods that Express was warning would be deprecated - `app.configure`, `express.bodyParser` and `express.methodOverride()`.

Since we're not really dealing with dev or production environments with this thing yet, there was no reason for us to use `app.configure`. `express.bodyParser` is now replaced by:
```
app.use(express.json());
app.use(express.urlencoded());
```
And the multipart related warning was fixed with using the connect-multiparty lib directly.
```
app.use(require('connect-multiparty')());
```

#### How should this be manually tested?
I tested both `/ds/tips` and the SMS game stuff. If you want to test, it'd be sufficient to just do a POST to `/ds/tips` and verify your phone receives an SMS.
```
POST to http://localhost:4711/ds/tips
phone=<your phone number here>&mdata_id=9521
```

#### What are the relevant tickets?
Fixes #54