tz: add note in backup and update UI

dashboard/src/views/backups.js

@@ -2,6 +2,7 @@
 
 /* global $, angular, TASK_TYPES, SECRET_PLACEHOLDER, STORAGE_PROVIDERS, BACKUP_FORMATS, APP_TYPES */
 /* global REGIONS_S3, REGIONS_WASABI, REGIONS_DIGITALOCEAN, REGIONS_EXOSCALE, REGIONS_SCALEWAY, REGIONS_LINODE, REGIONS_OVH, REGIONS_IONOS, REGIONS_UPCLOUD, REGIONS_VULTR , REGIONS_CONTABO */
+/* global document, window, FileReader */
 
 angular.module('Application').controller('BackupsController', ['$scope', '$location', '$rootScope', '$timeout', 'Client', function ($scope, $location, $rootScope, $timeout, Client) {
     Client.onReady(function () { if (!Client.getUserInfo().isAtLeastAdmin) $location.path('/'); });
@@ -15,6 +16,7 @@ angular.module('Application').controller('BackupsController', ['$scope', '$locat
     $scope.memory = null; // { memory, swap }
     $scope.mountStatus = null; // { state, message }
     $scope.manualBackupApps = [];
+    $scope.currentTimeZone = '';
 
     $scope.backupConfig = {};
     $scope.backups = [];
@@ -785,7 +787,7 @@ angular.module('Application').controller('BackupsController', ['$scope', '$locat
             $scope.backups.forEach(function (backup) {
                 backup.contents = []; // { id, label, fqdn }
                 backup.dependsOn.forEach(function (appBackupId) {
-                    let match = appBackupId.match(/app_(.*?)_.*/); // *? means non-greedy
+                    const match = appBackupId.match(/app_(.*?)_.*/); // *? means non-greedy
                     if (!match) return; // for example, 'mail'
                     const app = appsById[match[1]];
                     if (app) {