message: let individual checkboxes be "completed"
diff: background-color: rgba(0, 0, 0, 0.3);
  }
  +.objective-checkbox.objective-complete div {
  + margin: 2px;
  + height: 11px;
  + width: 11px;
  + background-color: #6dcc66;
  +}
  .objective-complete {
  opacity: 0.5;
  .objective-progress {
  