Productionize EyeFiServer: Build process and packaging (rpm)

[shiinee]

I put together a pretty simple build and package for the EyeFi server so it's easier to install.

Since I use Fedora, I wrote an rpm spec, and also added unit file for systemd since fedora doesn't use init anymore. I imagine you must be on a Debian based distro due to the init script :) If I can figure out how, I can also make a deb package for it.

My collaborator, @Rudd-O, made a nice little gui configurator that edits the user settings.

There are a few other changes in here that I needed in order to run properly on my machine. There was a small bug in the --conf option, where it would read /etc/eyefiserver.conf and ~/eyefiserver.conf in addition to what the user passes in.

It's up to you whether you want to accept these additions, but I think they make things easier :)