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

Issue #1998638 by damiankloip, dawehner, kim.pepper, cosmicdreams, alexpott, larowlan, Damien Tournoud: Replace almost all remaining superglobals (, , etc.) with Symfony Request object.

Issue #1998638 by damiankloip, dawehner, kim.pepper, cosmicdreams, larowlan, Damien Tournoud: Replace all remaining superglobals (, , etc.) with Symfony Request object.

Issue #2080391 by johnmcc, Bladedu, chertzog, jeroen12345: Remove Unused local variables from multiple core files.

Issue #2071019 by tim.plunkett, olli: Allow the block category for Views block displays to be edited.

Issue #2016953 by dawehner, damiankloip, tim.plunkett: Indicate when an optional handler is missing, that it is not 'broken'.

Issue #2006974 by thedavidmeister, jlbellido: Replace theme() with drupal_render() in views_ui().module.

Issue #2025991 by plach, David Hernández: Introduce hook_entity_prepare() to generalize hook_node_prepare().

Issue #2027335 by YesCT: If EntityFormController implements EntityControllerInterface it can ignore  in createInstance()/__construct().

Issue #1363112 by mparker17, mgifford, tlattimore, Jacine, dcmouyard, bowersox, ry5n, ahdiaz: Simplify names of 'element-x' helper classes.

Issue #1921748 by damiankloip: Fixed Views UI gives no indication that you are editing a disabled view.

Issue #1278456 by dawehner, damiankloip: Append [hidden] to administrative title of excluded fields.

This reverts commit c4e52bb6.

Issue #1909418 by tim.plunkett, damiankloip, larowlan, dawehner, kim.pepper: Allow Entity Controllers to have their dependencies injected.

Issue #1919700 by damiankloip, tim.plunkett: Replace views_ui_cache_set() with a method on the ViewUI object.

Issue #1913618 by tim.plunkett, amateescu: Convert EntityFormControllerInterface to extend FormInterface.

Issue #1820414 by damiankloip, tim.plunkett, xjm: Move views_ui().module directly into /core/modules/.

Issue #1963798 by tim.plunkett, damiankloip: Fixed Page displays cannot be deleted unless they have a valid path.

Issue #1849610 by mgifford, edrupal, dawehner, rootwork, falcon03: Improve 'add' links accessibility.

Issue #1847768 by rootatwc, tim.plunkett, effulgentsia, Crell, Damien Tournoud: Remove ip_address().

Issue #1831696 by dawehner, damiankloip | Bojhan: Fixed View page link goes nowhere, if you have not saved.