feat(dashboard): sync time range with url, closes #458

public/app/features/dashboard/timeSrv.js

@@ -10,7 +10,7 @@ define([
 
   var module = angular.module('grafana.services');
 
-  module.service('timeSrv', function($rootScope, $timeout, $routeParams, timer) {
+  module.service('timeSrv', function($rootScope, $timeout, $routeParams, timer, $location) {
     var self = this;
 
     this.init = function(dashboard) {
@@ -108,6 +108,13 @@ define([
         this.old_refresh = null;
       }
 
+      // update url params
+      var urlParams = $location.search();
+      var urlRange = this.timeRangeForUrl();
+      urlParams.from = urlRange.from;
+      urlParams.to = urlRange.to;
+      $location.search(urlParams);
+
       $rootScope.appEvent('time-range-changed', this.time);
       $timeout(this.refreshDashboard, 0);
     };