Manifest updates for Ramp interoperability

[absempere]

From Sara:

In Ramp testing, 2 more small manifest problems were found:

1. The manifest id (https://avannotate.github.io/dev-demo/manifest.json) should be the same as the URL it is published at (https://avannotate.github.io/dev-demo/manifests/manifest.json).

(note one has a manifests directory in the URL and the other doesn't)

2. We need to drop the quotes around the t= value in PointSelectors (they are values, not strings):
   selector": {
   "type": "PointSelector",
   "t": "45"
   }
   becomes
   selector": {
   "type": "PointSelector",
   "t": 45
   }

---

Ok, apologies, but there's one more change to the manifests (after a long discussion with folks on github).

Instead of using PointSelectors or Range Selectors, we're going to use a media FragmentSelector:

"selector": {
"type": "FragmentSelector",
"conformsTo": "http://www.w3.org/TR/media-frags/",
"value": "t=52,60"
}
(t could also just equal a single value rather than a range) and this time the value is actually in quotes.

We'll need to test this, because it probably doesn't work in all the players, but at least we'll be DOING IT RIGHT.

[SteveMarvin]

I'm not certain how to test this properly.