DataTables search enhance (ignore accents and case)

app/View/Items/index.ctp

@@ -1,6 +1,48 @@
 <script type="text/javascript">
+    jQuery.fn.DataTable.ext.type.search.string = function (data) {
+        return !data ?
+            '' :
+            typeof data === 'string' ?
+                data
+                    .replace(/\n/g, ' ')
+                    .replace(/á/g, 'a')
+                    .replace(/é/g, 'e')
+                    .replace(/í/g, 'i')
+                    .replace(/ó/g, 'o')
+                    .replace(/ú/g, 'u')
+                    .replace(/ê/g, 'e')
+                    .replace(/î/g, 'i')
+                    .replace(/ô/g, 'o')
+                    .replace(/è/g, 'e')
+                    .replace(/ï/g, 'i')
+                    .replace(/ü/g, 'u')
+                    .replace(/ě/g, 'e')
+                    .replace(/š/g, 's')
+                    .replace(/č/g, 'c')
+                    .replace(/ř/g, 'r')
+                    .replace(/ž/g, 'z')
+                    .replace(/ý/g, 'y')
+                    .replace(/ö/g, 'o')
+                    .replace(/ä/g, 'a')
+                    .replace(/ň/g, 'n')
+                    .replace(/Ě/g, 'e')
+                    .replace(/Š/g, 's')
+                    .replace(/Č/g, 'c')
+                    .replace(/Ř/g, 'r')
+                    .replace(/Ž/g, 'z')
+                    .replace(/Ý/g, 'y')
+                    .replace(/Á/g, 'a')
+                    .replace(/Í/g, 'i')
+                    .replace(/É/g, 'e')
+                    .replace(/Ň/g, 'n')
+                    .replace(/Ť/g, 't')
+                    .replace(/Ď/g, 'd')
+                    .replace(/ç/g, 'c') :
+                data;
+    };
+
     $(document).ready(function () {
-        $("#items-table").DataTable({
+        var table = $("#items-table").DataTable({
             paging: false,
             orderMulti: true,
             info: false,
@@ -11,7 +53,10 @@
                 {searchable: true},
                 {searchable: true},
                 {searchable: false}
-            ]
+            ],
+            search: {
+                caseInsensitive: true
+            }
         });
     });
 </script>

app/View/Layouts/default.ctp

@@ -9,7 +9,8 @@
     echo $this->Html->meta('icon');
     echo $this->Html->script(array(
         '//code.jquery.com/jquery-1.10.2.min.js',
-        '//cdn.datatables.net/1.10.2/js/jquery.dataTables.min.js'
+        '//cdn.datatables.net/1.10.2/js/jquery.dataTables.min.js',
+        '//cdn.datatables.net/plug-ins/725b2a2115b/filtering/type-based/accent-neutralise.js'
     ));
     echo $this->Html->css(array(
         'reset', 'styles',