Fix "No such file or directory" statuscodes

Fix for No such file or directory:
'/usr/local/lib/python2.7/dist-packages/Conpot-0.3.1-py2.7.egg/conpot/te
mplates/default/statuscodes/404.status'
Uhm .. I'm pretty confused. This problem is not limited to statuscodes - something must have changed in the way the docpath is passed to the server. The nosetests seem to do fine for retrieving entities from the filesystem while the real service even struggles to get template files like "index.html" due to the missing "http".

I'll have a look at it :)

cudeso: since this is already a "os.path.join" statement, you could just add the "http" folder to the list of arguments like this: 

```
with open(os.path.join(docpath, 'http', statuscodes', str(status) + '.status'), 'rb') as f:
```

This way the path is translated correctly if being used on Systems that don't use forward slashes as path separators, e.g. Windows. I learned this from Johnny :)

But first pls let me check where the hassle comes from, as this is pretty weird...