remove modernizr & usage

client/scss/tools/_mixins.general.scss

@@ -99,11 +99,12 @@
   margin-right: 0.2em;
 }
 
-// Applies given rules on hover, except for touch screens.
-// Relies on feature detection to add a no-touch class on the html element.
+// Applies given rules on hover, for devices that support hover.
 @mixin hover {
-  .no-touch &:hover {
-    @content;
+  @media (hover: hover) {
+    a:hover {
+      @content;
+    }
   }
 }
 

wagtail/admin/templates/wagtailadmin/skeleton.html

@@ -10,8 +10,6 @@
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <meta name="robots" content="noindex" />
 
-        <script src="{% versioned_static 'wagtailadmin/js/vendor/modernizr-2.6.2.min.js' %}"></script>
-
         <link rel="stylesheet" href="{% versioned_static 'wagtailadmin/css/normalize.css' %}" />
 
         {% block css %}{% endblock %}

wagtail/documents/static_src/wagtaildocs/js/add-multiple.js

@@ -1,10 +1,4 @@
 $(function () {
-  // Redirect users that don't support filereader
-  if (!$('html').hasClass('filereader')) {
-    document.location.href = window.fileupload_opts.simple_upload_url;
-    return false;
-  }
-
   // prevents browser default drag/drop
   $(document).on('drop dragover', function (e) {
     e.preventDefault();

wagtail/images/static_src/wagtailimages/js/add-multiple.js

@@ -1,10 +1,4 @@
 $(function () {
-  // Redirect users that don't support filereader
-  if (!$('html').hasClass('filereader')) {
-    document.location.href = window.fileupload_opts.simple_upload_url;
-    return false;
-  }
-
   // prevents browser default drag/drop
   $(document).on('drop dragover', function (e) {
     e.preventDefault();