Disable NIPSA-filtering on annotation permalink pages

When on individual annotation pages like /a/<annotation_id> make an API
request to /api/annotations/<annotaion_id> instead of to the search API.
This bypasses the search API's NIPSA-filtering.

If you have a direct link to an annotations individual page, then you
can see the annotation (and all its replies) regardless of whether
anything is NIPSA'd or any user is logged-in.

h/static/scripts/annotation-viewer-controller.coffee

@@ -24,8 +24,8 @@ module.exports = class AnnotationViewerController
       $location.path('/stream').search('q', query)
 
     id = $routeParams.id
-    store.SearchResource.get _id: id, ({rows}) ->
-      annotationMapper.loadAnnotations(rows)
+    store.AnnotationResource.read id: id, (annotation) ->
+      annotationMapper.loadAnnotations([annotation])
       $scope.threadRoot = children: [$scope.threading.getContainer(id)]
     store.SearchResource.get references: id, ({rows}) ->
       annotationMapper.loadAnnotations(rows)