Issue #2229157 by cwells, LewisNyman, tompagabor: Add correct button types to account settings forms.

Issue #2225739 by killua99, Berdir, andypost, pfrenssen: Remove usage of field_info_instances(), use EntityManager::getFieldDefinitions() instead.

This reverts commit 2cf87103.

Revert "Issue #2203271 by Xano: Undefined index "rows_order" in theme_field_ui_table()." contained another patch

This reverts commit a457090d.

Issue #2095303 by swentel, plopesc, Berdir, claudiu.cristea, yched: Rename 'field_entity' to 'field_config' and 'field_instance' to 'field_instance_config'.

Issue #2165155 by Berdir, tim.plunkett: Change $entity_type to $entity_type_id and $entity_info to $entity_type/$entity_types.

Issue #2145007 by tim.plunkett, h3rj4n: Convert form_set_error() in FormBase classes to use FormErrorInterface.

Issue #1503314 by swentel, amateescu, bojanz: Remove the concept of active / inactive (field types, storage) from Field API.

Issue #2066535 by tim.plunkett, jsst, Berdir: Add EntityManagerInterface and stop typehinting with EntityManager.

Issue #2050835 by Berdir | yched: Move Widget, Formatter, and FieldType plugin types to the Core\Field system.

Issue #1953408 by swentel, aspilicious, andypost, yched: Remove ArrayAccess BC layer from field config entities.

Issue #2100329 by cosmicdreams: Use \Drupal instead of Drupal to make IDEs and static code analyse tools happy.

Issue #1999346 by kim.pepper, atchijov, John Bickar, piyuesh23, dawehner, effulgentsia: Use Symfony Request for fieldui module.

Issue #2057869 by dawehner, jibran: Provide an alias for 'plugin.manager.entity' called 'entity.manager'.

Issue #1497374 by yched, chx, amateescu, plach, Damien Tournoud, fago, swentel: Switch from Field-based storage to Entity-based storage.

Issue #1847002 by tim.plunkett, effulgentsia, msonnabaum: Move entity type classes from Drupal$provider\Plugin\Core\Entity to Drupal$provider\Entity.

Issue #2045043 by bechtold, vijaycs85, YesCT, Gábor Hojtsy: Fixed Field listings operations cannot be altered.