ui: navigation: sort datastores entries

adding a new one after load will append it still at the end, though.
But datastores are not something which get frequently added after
initial setup, so don't care about that for now..

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

www/NavigationTree.js

@@ -89,6 +89,13 @@ Ext.define('PBS.view.main.NavigationTree', {
 		});
 	    }
 
+	    // FIXME: newly added always get appended to the end..
+	    records.sort((a, b) => {
+		if (a.id > b.id) return  1;
+		if (a.id < b.id) return -1;
+		return 0;
+	    });
+
 	    var list = root.findChild('path', 'pbsDataStoreStatus', false);
 	    var length = records.length;
 	    var lookup_hash = {};