Description of fields adjusted Drupal 9 compatibility
* Fixes https://www.drupal.org/project/blockgroup/issues/3156693
Minor leftover code removal
* Fixes https://www.drupal.org/project/blockgroup/issues/3120041 * Fixes https://www.drupal.org/project/blockgroup/issues/3156125
Minor templating bug fix, introduces a new helper function for responsive detection in main JS file