Issue #2071969 by yched: Fixed Serialize interface not reliable.
Issue #2029737 by ifrik, batigolix, Wim Leers: Create hook_help() for ckeditor module.
Issue #1987810 by nick_schuch, dawehner, vijaycs85, tim.plunkett: Convert system_admin_config_page() to a new style controller.
Issue #1978910 by kgoel, tim.plunkett, vijaycs85, dawehner: Fixed Convert layout_page_view() to a Controller.
Issue #2072323 by tim.plunkett: Modernize simpletest.module forms.
Issue #2072941 by marcingy, tim.plunkett: Modernize block.module forms.
Issue #2072369 by tim.plunkett: Modernize book.module forms.
Issue #2072351 by tim.plunkett: Modernize ban.module forms.
Issue #2072303 by tim.plunkett: Modernize views_ui().module forms.
Issue #2072249 by tim.plunkett: Modernize aggregator.module forms.
Issue #2071985 by tim.plunkett: Modernize form_test().module forms.
Issue #2072845 by tim.plunkett: Modernize taxonomy.module and forum.module forms.
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.