Issue #2190183 by damiankloip: Replace views_view_has_form_elements() with a hasFormElements() method on ViewExecutable.

Issue #2188289 by Jaypan, sun, jibran, Berdir: fix up docs for token functions and methods in regards to anonymous users and sessions

Issue #2191667 by sandykadam, Berdir: Fix documentation of field exists/notExists methods on entity query interface

Issue #2194357 by alexpott, Berdir: CacheArray::__destruct() invoked after test tables have been removed.

Issue #2188523 by sun: ExceptionController does not respect configured system.logging:error_level (verbose backtrace).

Issue #460408 by marthinal, gpk, girishmuraly, jojonaloha, david_garcia_garcia, gnindl, nerdcore, acbramley, dotton, Cottser, dww: (regression tests for) Cannot administer menu item/link if it points to an unpublished node.

Issue #893302 by jhodgdon, rayasa: Search ranking based on the factor 'number of comments'  & 'No of Page Views' is broken.

Issue #2156337 by yched, amateescu, smiletrl: Merge ConfigEntityReferenceItemBase up into EntityReferenceItem, and fix inconsistencies.

Issue #2072647 by thedavidmeister, herom, jwilson3, Cottser, LinL: #theme 'maintenance_page' should support render arrays in #content.

Issue #1934772 by sun, andypost, tim.plunkett: Filter module is not required, but is marked as required.

Issue #922696 by mgifford, EvanDonovan, LewisNyman, stpaultim, jensimmons: New methods, standards for describing core themes on themes admin page (was Theme screenshots do not have adequate alt text...).

Issue #2045931 by Sam152, joelpittet, LinL, Sutharsan, adsw12: Replace all module_exists() deprecated function calls.

Issue #2182315 by joachim: Simpletest verbose output doesn't show end result of a drupalPostAjaxForm().

Issue #2181863 by karthik kumar bodu: Xpath method on \Drupal\simpletest\WebTestBase has an undocumented  parameter.