Fixed issue with updating default data source, it required page reload to take…

Fixed issue with updating default data source, it required page reload to take effect, should not be required, now fixed, Fixes #1671

CHANGELOG.md

+# 2.0.0-RC1  (unreleased)
+
+- [Issue #1671](https://github.com/grafana/grafana/issues/1671). Data sources: Fixed issue with changing default data source (should not require full page load to take effect, now fixed)
+
+
 # 2.0.0-Beta1 (2015-03-30)
 
 **New features**

public/app/features/org/datasourceEditCtrl.js

 define([
   'angular',
-  'lodash',
+  'config',
 ],
-function (angular) {
+function (angular, config) {
   'use strict';
 
   var module = angular.module('grafana.controllers');
@@ -59,7 +59,9 @@ function (angular) {
 
     $scope.updateFrontendSettings = function() {
       backendSrv.get('/api/frontend/settings').then(function(settings) {
-        datasourceSrv.init(settings.datasources);
+        config.datasources = settings.datasources;
+        config.defaultDatasource = settings.defaultDatasource;
+        datasourceSrv.init();
       });
     };
 

public/app/services/datasourceSrv.js

@@ -11,9 +11,7 @@ function (angular, _, config) {
   module.service('datasourceSrv', function($q, $injector, $rootScope) {
     var self = this;
 
-    this.init = function(dsSettingList) {
-      config.datasources = dsSettingList;
-
+    this.init = function() {
       this.datasources = {};
       this.metricSources = [];
       this.annotationSources = [];
@@ -77,6 +75,6 @@ function (angular, _, config) {
       return this.metricSources;
     };
 
-    this.init(config.datasources);
+    this.init();
   });
 });