anchor.diff:          <%= form_tag scan_username_event_path(@event), remote: false do %>
             <div class="input-group">
               <div class="input-group">
  -              <input required type="text" class="form-control typeahead" 
  +              <input required type="text" class="form-control typeahead"
                   placeholder="Ugent username" name="username" id="username">
                 <span class="input-group-btn">
                   <button class="btn btn-primary" name="button" type="submit">
  
positive.code:             }
          }
      }
  ); 
  </script>
  
negative.code:         templates: {
              suggestion: function(registration) {
                  var container = $('<div/>');
                  var name = $('<span/>', {
                      class: "typeahead-scan-name",
                      text: registration.name
                  });
                  var email = $('<span/>', {
                      class: "typeahead-scan-email",
  