Bug fixes

This release supersedes previous wrong beta Here's a current 8.7.x core compatible release

Ongoing work to make module compatible with 9.0 happens in #3121379: Drupal 9 compatibility and clean-up in XHProf

#3028371: Use $this->t() instead of t() in form
#3101212: Exposed form as block has no autosubmit

See git log for a list of all fixed bugs and improvments.

• Replaces Instagram Legacy API* with Basic Display API: New accounts and reauthentication are mandatory!

* Instagram Legacy API Platform will be disabled on March 31, 2020: https://developers.facebook.com/blog/post/2019/10/15/launch-instagram-ba...

Fixes JS error on Drupal side: https://www.drupal.org/project/bootstrap_storybook/issues/3121498
Adds documentation for subtheme updates
Defines composer.json and theme dependencies