title: YADCF select - with custom options
body: <p>Have a table with some data loaded from server by provised ajax to DataTable, also have yadcf for filtering on server side. In one of columns i have select2 box, in what i want see only predefined (loaded from server) options (in example on jsfiddle it is <code>opt</code> variable), but options in select2 contains also data from column. How i can disable adding column data, and stay only loaded from server options? </p>
  
  <pre><code>https://jsfiddle.net/6ssh8mg4/
  </code></pre>
  
  <p>code:</p>
  
  <pre><code> var opts = [{id:0, text:"Some 1"},{id:1, text:"Some 2"}];
   var table = $("#docTable").DataTable({
              processing: true,
              serverSide: false,
              paging: true,
              ordering: true,
              deferRender: true,
              pageLength: 10,
              lengthMenu: [[10, 50, 100, -1], [10, 50, 100, "All"]],
              columns: [
                 { "data": "Identifier", className: "nowrap" },
                 { "data": "Name" },
              ]
   });
  
  yadcf.init(table, [
    { column_number: 0, filter_type: "text", style_class: "form_control", filter_default_label: "" },
    {
      column_number: 1, filter_type: "select", select_type: "select2", filter_default_label: "",
      select_type_options: {
        data: opts,
        width: '180px',
        dropdownAutoWidth: true,
      }
    },
  ]);
  </code></pre>