anchor.diff:          } //end of updateSubscriptions
   
           $('#btn_addrss').click(function (event) {
  -            var newRssField=$('#new_rss');
  +            var newRssField = $('#new_rss');
               var rss = newRssField.val();
               newRssField.popover(
                   {
  
positive.code:         reloadRssTable();
  
          function reloadRssTable() {
              $.getJSON(rootURL+ '/${subscriber}', function (data) {
                  userData = data;
  
                  var rssTable = '<table class="table table-hover"><thead>' +
                      '<tr>' +
                      '<th style="vertical-align: initial"><input type="checkbox" class="form-check-input" id="select_all_checkbox"/></th>' +
                      '<th>#</th>' +
                      '<th>rss</th>' +
                      '<th>status</th>' +
                      '<th>last polling date</th>' +
                      '<th>error message</th>' +
                      '<th>retry count</th>' +
                      '</tr></thead><tbody>';
  
                  $.each(data.rsslist, function (i, item) {
                      var tr;
                      if (item.status === 'dead') {
                          tr = '<tr class="table-danger">';
                      }
                      else if (item.status === 'offline') {
                          tr = '<tr class="table-warning">';
                      }
                      else {
                          tr = '<tr class="table-light">';
                      }
  
                      tr += '<td><input type="checkbox" class="form-check-input" id="' + item.rss + '"/></td><td>';
  
                      rssTable += tr + (i + 1) + '</td><td>'
                          + '<a href="' + item.rss + '" target="_blank">' + item.rss + '</a></td><td>'
                          + item.status + '</td><td>'
                          + item.lastPollingDate + '</td><td>'
                          + item.errorMessage + '</td><td>'
                          + item.retryCount + '</td></tr>'
  
                  });
                  rssTable += '</tbody></table>';
                  $("#details").html(rssTable);
  
                  $("#select_all_checkbox").change(function (e) {
  
negative.code:                     <form id="subscribers_form" action="" method="post">
                          <div class="btn-toolbar bg-light" role="toolbar" aria-label="">
                              <div class="btn-group" role="group">
                                  <button id="add_btn" class="navbar-brand btn-outline-info" type="submit"
                                          data-tooltip="tooltip" data-placement="top" title="New subscription">
                                      <i class="fas fa-plus-circle fa-2x"></i>
                                  </button>
                              </div>
                              <div class="btn-group mr-2" role="group" aria-label="">
                                  <button id="activate_btn" class="navbar-brand btn-outline-primary" type="submit"
                                          data-tooltip="tooltip" data-placement="top" title="Activate subscriptions">
                                      <i class="far fa-play-circle fa-2x"></i>
                                  </button>
                                  <button id="deactivate_btn" class="navbar-brand btn-outline-warning" type="submit"
                                          data-tooltip="tooltip" data-placement="top" title="Deactivate subscriptions">
                                      <i class="far fa-pause-circle fa-2x"></i>
                                  </button>
                              </div>
                              <div class="btn-group" role="group">
                                  <button id="remove_btn" class="navbar-brand btn-outline-danger" type="submit"
                                          data-tooltip="tooltip" data-placement="top" title="Remove subscriptions">
                                      <i class="far fa-trash-alt fa-2x"></i>
                                  </button>
                              </div>
  