modernize select multiple

works in "composer" mode:

    $ composer update
hmm `post_note.php` page lacks `<body>` css classes:

```html
</head>
<!--[if lt IE 7 ]> <body class="ie6  " id=""> <![endif]-->
<!--[if IE 7 ]> <body class="ie7  " id=""> <![endif]-->
<!--[if IE 8 ]> <body class="ie8  " id=""> <![endif]-->
<!--[if !IE]>--> <body class=" " id=""><!--<![endif]-->
<div id="container">
```