Integrate with Casting devices

[cmdalbem]

Some initial discovery on integrating with Google Chromecast showed it's not super easy, since we'd need to implement the client side that runs on Chromecast. And this effort wouldn't replicable to other devices, for example Roku which seems to be even more popular (worldwide? in the US?).
The YouTube player does have a native casting button which we could expose, but it wouldn't replicate the Escapista experience since it'd cast only that current video, and not our special "scheduling".

References

https://developers.google.com/cast/docs/chrome_sender/integrate
https://developers.google.com/cast/docs/developers#chrome
https://gist.github.com/guerrerocarlos/3aca64069853d8d24a83b481246f23ca
https://github.com/ur1katz/casttube
https://github.com/skorokithakis/catt
https://stackoverflow.com/questions/18582694/youtube-iframe-api-behavior-on-chromecast