Getting ready for Teatro.io cloud stage server

Teatro.io is a cloud stage server (http://Teatro.io).
Currently we (team of Teatro) seek for open source projects and adapt them to run in that environment (for demo purposes).

Now we adapted TracksApp: http://master.b1df86e9d43fb943dddea44797df2e1e.ttrcloud.com/ (teatro:teatro)
But this is just a fork. We want TracksApp to support Teatro out-of-the-box from original repo.

Good side effect is you'll have live demo app on Teatro.io.

Please merge.