Uniform keys for RATING_TEXT

[oslego]

The RATING_TEXT object and consuming code afford the existence of both string keys like "A", "B", "C" as well as a Boolean false and a Numeric zero for unrated services.

The object keys should have a consistent type. The false and 0 should be collapsed into a single key given how their associated label description is identical.

Perhaps it helps to have a util method which returns a rating label and description given an input, instead of tying the service.rated value directly to the keys of RATING_TEXT. This would help remove some ambiguity from the code.

Something like:

getRatingText(label) {
 let text = "";
 switch (label) {
   case "A":
     text = "The terms of service treat you fairly...";
     break;
   case "B":
     text = "...";
     break;

  // ... more known labels

  // handle anything unexpected
  default:
    text = "We haven't sufficiently reviewed the terms...";
 }

return text;
}

[JustinBack]

This is a good idea, we should move all functions into one place as well, I'll test something like this today