rebaseline_server: only show Pending Approval tab if expectations vs actuals

gm/rebaseline_server/static/live-loader.js

 /*
  * Loader:
  * Reads GM result reports written out by results.py, and imports
  * them into $scope.extraColumnHeaders and $scope.imagePairs .
  */
 var Loader = angular.module(
     'Loader',
     ['ConstantsModule']
 );
 
@@ skipping 123 matching lines @@
     $scope.loadingMessage = "please wait...";
 
     var currSortAsc = true; 
 
 
     /**
      * On initial page load, load a full dictionary of results.
      * Once the dictionary is loaded, unhide the page elements so they can
      * render the data.
      */
-    var liveQueryUrl =
+    $scope.liveQueryUrl =
        "/live-results/setADir=" + encodeURIComponent($scope.setADir) +
        "&setASection=" + encodeURIComponent($scope.setASection) +
        "&setBDir=" + encodeURIComponent($scope.setBDir) +
        "&setBSection=" + encodeURIComponent($scope.setBSection);
-    $http.get(liveQueryUrl).success(
+    $http.get($scope.liveQueryUrl).success(
       function(data, status, header, config) {
         var dataHeader = data[constants.KEY__ROOT__HEADER];
         if (dataHeader[constants.KEY__HEADER__SCHEMA_VERSION] !=
             constants.VALUE__HEADER__SCHEMA_VERSION) {
           $scope.loadingMessage = "ERROR: Got JSON file with schema version "
               + dataHeader[constants.KEY__HEADER__SCHEMA_VERSION]
               + " but expected schema version "
               + constants.VALUE__HEADER__SCHEMA_VERSION;
         } else if (dataHeader[constants.KEY__HEADER__IS_STILL_LOADING]) {
           // Apply the server's requested reload delay to local time,
@@ skipping 871 matching lines @@
      */
     $scope.getImageDiffRelativeUrl = function(imagePair) {
       var before =
           imagePair[constants.KEY__IMAGEPAIRS__IMAGE_A_URL] + "-vs-" +
           imagePair[constants.KEY__IMAGEPAIRS__IMAGE_B_URL];
       return before.replace(/[^\w\-]/g, "_") + ".png";
     }
 
   }
 );