Add support for more Bootstrap based themes and choose the better default theme

Problem/Motivation

Most of the currently supported and recommended Bootstrap themes look pretty ugly by default or require patches and manual actions to make them work well.
I found more Bootstrap-based themes that look better:
https://www.drupal.org/project/basecore →
https://www.drupal.org/project/bootbase →
https://www.drupal.org/project/bootstrap_business →
https://www.drupal.org/project/corporateclean →
https://www.drupal.org/project/bootpress →

We need to add them to the list of recommended themes, and use https://www.drupal.org/project/basecore → as the first recommended, and switch to using it by default in tests. Also, remove all "bootstrap" theme patches from composer.json to make it clean.

Also, we have an issue with Bootstrap CSS classes, with all other themes, our catalog has too much spacing on the left and right, we need to fix this.