Trello activity log filter - remove duplicate entries from the activity log caused by mirrored cards (via placker or otherwise) on other boards

trello-actiity-filter-gist.js

/* 
* This finds every element with class .phenom as a first-level child of .list-actions, 
* then finds ".phenom-meta.quiet" within that, which contains the name of the board. 
* If the given board name is not found, then remove this action entry.
* I just run this in the browser console to filter on the fly when needed. Throwing
* it in GitHub Gist in case I lose it locally.
*/
var elements = document.querySelectorAll('.list-actions > .phenom');
for (var i = 0; i < elements.length; i++) {
  var element = elements[i];
  var meta = element.querySelector('.phenom-meta.quiet');
  if (meta && meta.textContent.indexOf('The Name of The Board') === -1) {
    element.parentNode.removeChild(element);
  }
}