HTTP GM results viewer: server now returns category summaries along with testData

gm/rebaseline_server/static/loader.js

 /*
  * Loader:
- * Reads GM result reports written out by results_loader.py, and imports
- * their data into $scope.results .
+ * Reads GM result reports written out by results.py, and imports
+ * them into $scope.categories and $scope.testData .
  */
 var Loader = angular.module(
     'Loader',
     []
 );
 Loader.controller(
   'Loader.Controller',
   function($scope, $http) {
     $http.get("/results/all").then(
       function(response) {
-        $scope.results = response.data;
+        $scope.categories = response.data.categories;
+        $scope.testData = response.data.testData;
         $scope.sortColumn = 'test';
+        $scope.showResultsOfType = 'failed';
       }
     );
   }
 );