rebaseline_server: if urlSchemaVersion is not specified, assume current

gm/rebaseline_server/static/loader.js

Index: gm/rebaseline_server/static/loader.js
diff --git a/gm/rebaseline_server/static/loader.js b/gm/rebaseline_server/static/loader.js
index dbded05f2500684664a2653d37368f715d3b0df0..8df00e35672e991fb56b35464f505d4f4156a865 100644
--- a/gm/rebaseline_server/static/loader.js
+++ b/gm/rebaseline_server/static/loader.js
@@ -427,14 +427,12 @@ Loader.controller(
     $scope.queryParameters.load = function() {
       var nameValuePairs = $location.search();
 
-      var urlSchemaVersion = nameValuePairs[constants.URL_KEY__SCHEMA_VERSION];
-      if (!urlSchemaVersion) {
-        $scope.urlSchemaVersionLoaded = 0;
-      } else if (urlSchemaVersion == constants.URL_VALUE__SCHEMA_VERSION__ALWAYS_CURRENT) {
-        $scope.urlSchemaVersionLoaded = constants.URL_VALUE__SCHEMA_VERSION__CURRENT;
-      } else {
-        $scope.urlSchemaVersionLoaded = urlSchemaVersion;
+      // If urlSchemaVersion is not specified, we assume the current version.
+      var urlSchemaVersion = constants.URL_VALUE__SCHEMA_VERSION__CURRENT;
+      if (constants.URL_KEY__SCHEMA_VERSION in nameValuePairs) {
+        urlSchemaVersion = nameValuePairs[constants.URL_KEY__SCHEMA_VERSION];
       }
+      $scope.urlSchemaVersionLoaded = urlSchemaVersion;
 
       angular.forEach($scope.queryParameters.map,
                       function(copier, paramName) {