Host poche in a local virtual machine

It's quite not what was requested in #220 but still permits isolation from local machine.

Poche is hosted on a Debian Wheezy with nginx, php-fpm and sqlite for data.
It serves local files through a filesystem mount so when you change your files, it reflect changes instantly (no copy).

I've successfully tested this setup on my Ubuntu 13.04, might not work on other setups though.