Add MiniWeb (Build 300) Arbitrary File Upload

Add MiniWeb (Build 300) Arbitrary File Upload

```
Homepage: http://miniweb.sourceforge.net/
Tested on MiniWeb build 300, built on Feb 28 2013 (Windows XP SP3) (EN)
```

![MiniWeb (Build 300) Arbitrary File Upload](https://f.cloud.github.com/assets/434827/963166/c062bb6c-04fd-11e3-97ef-933d792bf828.png)