Issue #3245725 by yauheni: Drupal 9 deprecated code report

Alexander Kovriginrequested to merge
issue/field_quiz-3245725:3245725-drupal-9-deprecated_alpha2 into 8.x-1.x
  • added core_version_requirement
  • replace "theme_field_quiz_question_view" theme function with template
  • fix field widget warnings

Closes #3245725

Merge request reports