Issue #2004408 followup by tim.plunkett: Random failure: Allow modules to alter the result of EntityListController::getOperations.

This reverts commit 0f480b9e.

This reverts commit 2db9d595.

Issue #1986802 by yched: Rename PluginInspectionInterface::getDefinition() to getPluginDefinition().

Issue #2004408 by YesCT, penyaskito: Allow modules to alter the result of EntityListController::getOperations.

Issue #1972514 by Wim Leers, effulgentsia, Gábor Hojtsy, ekl1773: Fixed Impossible to set attributes for all entities.

Issue #2002506 by pcambra, JoshuaRogers: Fixed Rearranging fields and sorts causes existing items to be removed.

Issue #1953414 by swentel, andypost: Move logic of field_read_fields() and field_read_instances() to the storage controller.

Issue #1960888 by jibran, dawehner, tim.plunkett, damiankloip: Fixed Default archive view uses wrong argument plugin.

Issue #2006278 by Wim Leers: Remove leftover 'module' annotation keys and plugin manager processDefinition() to deal with disabled modules during tests.

Issue #2002934 by drupee, damiankloip, x.algorithm, kevin.reiss, heddn: Rename Views method validate_argument() to validateArgument().

Issue #2014617 by kfritsche, YesCT, tstoeckler: Fixed Unsaved menu links have the wrong bundle (always 'tools').

Issue #2003282 by theladebug, sillygwailo, heddn: Rename Views method set_items_per_page() to setItemsPerPage().

Issue #2003246 by endorn, Dan Reinders, nathangervais: Rename Views method sort_options() to sortOptions().

Issue #2002144 by phenaproxima, connork, rdrh555, zschmid, elvis2, drupalway, heddn: Rename Views method add_field() to addField().

Issue #2002910 by diarmy, toddtomlinson, dbcollies, heddn: Rename Views method get_field() to getField().

Issue #1998140 by dawehner, ParisLiakos, tim.plunkett: Remove backward compatible ControllerInterface.

Issue #1895160 by tim.plunkett: Convert admin/content to a View, keep a non-views fallback with no bulk operations.

Issue #2003436 by Dan Reinders, heddn: Rename Views method page_display_options() to pageDisplayOptions().

Issue #1999328 by DmitryDrozdik, annikaC, jeroen12345, andypost: Remove comment_save() and comment_delete()/comment_delete_multiple() in favor of $comment->save()/$comment->delete().

Issue #2012836 by tim.plunkett: Replace drupal_region_class() with direct calls to drupal_html_class().

Issue #1825332 by Berdir, ParisLiakos, andypost, dawehner, jrglasgow, aspilicious: Introduce an AccountInterface to represent the current user.

Issue #2003356 by phenaproxima, jibran, drupalway, Dan Reinders: Rename Views method process_summary_arguments() to processSummaryArguments().

Issue #2003266 by kenianbei, misselbeck, iStryker, Dan Reinders: Rename Views method show_build_group_button() to showBuildGroupButton().

Issue #2002500 by fmizzell, jibran: Rename Views method exposed_form_validate() to exposedFormValidate().