Enable a basic shortcut/redirect engine

[gbinal]

By setting up some basic framework for us to do branded redirects.

I know we'll want to be v. intentional about top level folder space at 18f.gsa.gov/XXXX, but if we set up some lightweight redirect engine at 18f.gsa.gov/s/ then we can put all of the URLs which don't quite warrant that realestate there and still have much better urls to circulate and possibly some lightweight analytics to use on them. That way, anything, no matter how long or ugly can easily become 18f.gsa.gov/s/XXXX.

Gray

[quepol]

Is the go.usa.gov code usable/forkable? Or should we roll our own?

[konklone]

Closing until there's a particular example.