isrcsubmit.py --version displays the version twice

```
$ ./isrcsubmit.py --version
isrcsubmit 2.0.0-dev by JonnyJD for MusicBrainz
using discid version 1.1.0
isrcsubmit 2.0.0-dev by JonnyJD for MusicBrainz
```

The reason is that the first version information is printed before the options are parsed, so the version is alway at the top.

Switching them would lead to having usage information without the version and possibly displaying the backend version before our own version.

short: This has to do with `OptionParser`.