Easier environment setup with Fabric

[JackWink]

I've been working on adding fabric support for a quicker dev environment setup. It's not quite ready, but it's far enough along that I'd like to get feedback before I continue too far down this road.

Some things that I'm still working on:

• fab run and fab run:development don't run start ngrok
• fab run:production doesn't touch iptables or init the models

[JackWink]

Fabric isn't really designed to start two blocking operations, so I don't think it'd be a good idea to have it run ngrok for fab run:development, also not sure people want to automatically open a tunnel to their localhost.

Starting to reconsider even including fab run:production or having a production environment as far as fabric/config is concerned. I'd guess most people already have their own system in place for deploying it / exporting their prod environment variables.

[sinak]

Hey Jack, thanks for the PR. I actually don't have too much experience with Fabric, did you end up giving up?

[JackWink]

Not entirely, just got busy with other stuff while waiting for feedback.

I use fabric as a Makefile replacement, it accomplishes the same thing, but you're able to script in python and run shell commands both locally and remotely. Completely understand if you're not sold on it, but I think there are a couple commits in here that you might want to cherry pick if that's the case.