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'
Nice find, thanks for the pull request.
If it works, it would better with something like `os.path.join(self.docpath, 'statuscodes')`.
@creolis can you enlighten us? :-)