Make changes to gquintard work

This branch still does not start. Being a python app, the main script does not need to be in the same folder as the python module.

On commit `40b3496` I am getting this error

```
$ python gnomemusic/gnome-music
Traceback (most recent call last):
  File "gnomemusic/gnome-music", line 6, in <module>
    from gnomemusic.application import Application
ImportError: No module named gnomemusic.application
```

Please apply this patch on top of your branch HEAD, it will fix the import issue `http://fpaste.org/25258/73834144/raw/`

The only issue left after applying this patch would be

`(gnome-music:18957): GLib-GIO-CRITICAL **: Timeout was reached`