Add option to receive answer as SMS

Should be before seeing the content
We need to break the items out to individual ones wrapped in translatable, then build them together here.
```
var prev = $("Prev");
var next = $("Next");
var send = $("Send to me by SMS");
var footer_text = [
    "1. " + prev,
    "2. " + next, 
    "0. " + send
].join("\n");
```