Issue #2062091 by m1r1k: Remove references to global  in Block module.
Issue #1963886 by ry5n, jessebeach, dcrocks, Wim Leers: Use HiDPI icons in the toolbar to support scaling on different devices.
Issue #1872296 by nod_, Wim Leers, jessebeach: Edit should use core-provided Dialog (instead of its own).
Issue #2075503 by tstoeckler: Fixed Wrong issue linked in @todo in ViewUI::baseFieldDefinitions().
Issue #2056405 by plopesc, yched: Let field types provide their support for 'default values' and associated input UI.
Issue #2062367 by tim.plunkett, dawehner: Fixed Prevent PluginBags from reordering the export based on their sort.
Issue #2067323 by geerlingguy, jessebeach: Fixed Don't show empty vertical tabs area if all vertical tabs are hidden.
Issue #1913036 by jessebeach, Wim Leers: Reorganize contextual module's JS assets into their own subdirectories.
Issue #2067285 by LSU_JBob: Fixed The entity in-place editing toolbar appears above the Drupal dialog.
Issue #1998700 by kim.pepper, mhagedon: Use Symfony Request for core classes.
Issue #1997262 by andypost, nick_schuch, larowlan, tim.plunkett, jibran, chertzog, kim.pepper: Convert custom_block_delete_form() to new form interface.
Issue #2065571 by pwolanin, damiankloip, neclimdul: Add YAML Plugin discovery.
Issue #2061895 by sergeypavlenko: Remove calls to deprecated global $user in file module.
Issue #1987892 by disasm: Convert url_alter_test_foo() to a new style controller.
Issue #2067991 by alexpott: Fixed XDEBUG_SESSION cookie causes upgrade path tests to fail.
Merge branch '8.x' into comment-fieldapi4
Merge branch 'comment-fieldapi4' into cf4