Problem with the button to upload images on the mobile interface

With this https://github.com/diaspora/diaspora/commit/4cbae601e8e7f12465e7371e1b2b6e6428e4d533#L4R40 

```
Uncaught ReferenceError: app is not defined home-5fe83ffd41c39b3acbd6f2a6762fbbcc.js:8

Uncaught TypeError: Cannot read property 'FileUploaderBasic' of undefined edit:6
```

![Captura de pantalla de 2013-02-20 13:36:53](https://f.cloud.github.com/assets/1108789/175840/040001ee-7b5c-11e2-8e9d-9dc3e6cef4ca.png)