message: Change dropzone version to earlier, less error prone version
diff: <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href='https://fonts.googleapis.com/css?family=Open+Sans:400,600,300,700' rel='stylesheet' type='text/css'>
  <link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">
  - <link href="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.2.0/min/basic.min.css" rel="stylesheet" type="text/css">
  - <link href="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.2.0/min/dropzone.min.css" rel="stylesheet" type="text/css">
  + <link href="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.1.1/min/basic.min.css" rel="stylesheet" type="text/css">
  + <link href="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.1.1/min/dropzone.min.css" rel="stylesheet" type="text/css">
  <link rel="stylesheet" href="{{rootURL}}ember_osf_web/assets/vendor.css">
  <link rel="stylesheet" href="{{rootURL}}ember_osf_web/assets/ember-osf-web.css">
  - <script src="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.2.0/min/dropzone.min.js"></script>
  + <script src="https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.1.1/min/dropzone.min.js"></script>
  {{content-for "head"}}
  {{content-for "head-footer"}}
  </head>
  