Bug fixes

Standard Drupal & DrupalPractice
Fix fields list - replace FieldConfigInterface by FieldConfig

First beta release

Changes since 8.x-2.0-alpha3:

Complete rewrite, now uses constraints instead of form validation.

The 1.2 release fixed some issue.

Changes since 8.x-1.1:

EntityViewEvent didn't pass the build array by reference, this release fixes this problem.

Fixed issue #2907564 "libraries not found"