www/DataStoreStatus.js: define Model for datastorte list

We want to use the admin/datastore api (instead of config/datastore),
to get the restricted list of datastores.

www/DataStoreStatus.js

@@ -1,3 +1,13 @@
+Ext.define('pbs-datastore-list', {
+    extend: 'Ext.data.Model',
+    fields: [ 'name', 'comment' ],
+    proxy: {
+        type: 'proxmox',
+	url: "/api2/json/admin/datastore"
+    },
+    idProperty: 'store'
+});
+
 Ext.define('PBS.DataStoreStatus', {
     extend: 'Ext.panel.Panel',
     alias: 'widget.pbsDataStoreStatus',

www/NavigationTree.js

@@ -55,7 +55,7 @@ Ext.define('PBS.view.main.NavigationTree', {
 		autoStart: true,
 		interval: 15 * 1000,
 		storeid: 'pbs-datastore-list',
-		model: 'pbs-data-store-config'
+		model: 'pbs-datastore-list'
 	    });
 
 	    view.rstore.on('load', this.onLoad, this);