Bug fixes

See https://github.com/emulsify-ds/emulsify-drupal/releases/tag/v1.0.0-beta.3

Updates:

* Remove artificial form fields prior to saving task.
* Do not show back to backlog button for tasks on sprint project board.
* Do not check for completed status before showing close button, as that can also mean final swimlane on board.
* Fix composer.json formatting.
* Add entity revision keys for Drupal 9 support.
* Do not hide revision log fields in Drupal 9, as they do not yet exist at the point where the form is defined.
* Make task forms work correctly in Drupal 9.
* Make project forms work in Drupal 9.

#3123392: Missing Configure button in module list page
#3158924: Fix DrupalCI fails

• Set permissions to manage path.
• Fix drupal 8 support.
• Add help page

Thanks to @jeffaxelrod for putting in these issues and helping me work through them.

#3158570: UI shouldn't default to rebus input
#3158571: Checkbox labels missing

This is more stable release with Drupal 8 and I will be working on Drupal 9 release soon for compatibility.
Included latest patch included by community members from issue #3075353.
drupal_set_message() replaced with addMessage() function.