Remove use of `eval`

For example (https://github.com/CeroyUno/JavaScriptView/blob/master/js/jsview.js#L120):

```
eval( '$JSView.controller.' + e + '("' + e + '")' );
```

I think this would be better written as

```
$JSView.controller[e](e);
```

By my count there's four spots where `eval` is being used like this.
