moved grid sizes up a size to be more inline with BS-3/current dlg site. Also...
requested to merge 20230227-js-carousel-and-search-bar-css-fixes into 452-blacklight-7-rails-6-upgrade
moved grid sizes up a size to be more inline with BS-3/current dlg site. Also changed class container to container-xl to get total width closer to BS-3/curent dlg sites width