This reverts commit 3ac426f9.

Issue #2022875 by Berdir, alexpott, Xano, swentel, tim.plunkett, vladan.me: Resolve difference between submitForm(), submit(), and save() in EntityFormController.

Issue #2326537 by olli: Fixed editor.module causes fatal error for images with invalid or non-existing file UUIDs.

Issue #2324121 by Berdir, slashrsm, alexpott: Fixed NodeType's settings array was meant to be able to store information from mutliple modules.

Issue #2295469 followup by damiankloip: Add support for static permission definitions with *.permissions.yml.

Issue #1831674 by lokapujya, longwave, dawehner, Mirakolous, neoligero, Kevin Morse | Bojhan: "Create a label" should be off by default, with an opt-in for style plugins.

Issue #2285493 by joelpittet, lanchez: Remove deprecated 'class' property from #theme 'links' and #theme 'menu_tree' heading arrays.

Issue #474004 by mdrummond, kim.pepper, Wim Leers, jibran, tim.plunkett, joachim | JohnAlbin: Add options to system menu block so primary and secondary menus can be blocks rather than variables.

Issue #2068331 by roderik, slashrsm, pcambra, Sharique, piyuesh23, vijaycs85 | plach: Convert comment SQL queries to the Entity Query API.

Issue #2226493 by Berdir, Wim Leers, m1r1k, mr.baileys, andypost, scor, cbr, joelpittet: Apply formatters and widgets to Node base fields.

Issue #2329505 by Cottser, SebCorbin, joelpittet, drupalninja99, jenlampton, longwave, aboros, trevorkjorlien, socketwench, shanethehat, mbrett5062, rteijeiro: Convert theme_task_list to Twig template.

Revert "Issue #1885564 by Cottser, SebCorbin, joelpittet, drupalninja99, jenlampton, longwave, aboros, trevorkjorlien, socketwench, shanethehat, mbrett5062, rteijeiro: Convert theme_task_list to Twig template."

Wrong issue number; correcting...

This reverts commit 511d9f79.

Issue #2031301 by andypost, Cottser, xjm, mark.labrecque, mariacha1, joelpittet, robynlgreen, danquah, trogels, Eric_A, thedavidmeister, jenlampton: Replace theme_more_link() and replace with #type 'more_link'.

Issue #1885564 by Cottser, SebCorbin, joelpittet, drupalninja99, jenlampton, longwave, aboros, trevorkjorlien, socketwench, shanethehat, mbrett5062, rteijeiro: Convert theme_task_list to Twig template.

Issue #791072 by Danny.Wouters, swentel, lz1irq, David_Rothstein, jbrown: Fixed Inline deletion of shortcut should not be confirmed.

Issue #2326093 by astrocling | jhodgdon: Need new section about Twig added to theme system overview.

Issue #2320111 by Wim Leers | mparker17: Better help text for the "Alternative text" field in the Text Editor image dialog.

Issue #2321593 by Temoor: Replace all instances of block_load(), entity_load('block') and entity_load_multiple('block') with static method calls.

Issue #2222049 by LewisNyman, Michael Hodge Jr, sqndr: Add a .csslintrc file that's in line with our CSS standards.

Issue #2285245 by Devin Carlson, martin107, swentel, mducharme: Fixed Missing "Save" button on shortcut links list.

Issue #2327095 by tstoeckler: Document how to allow test module and theme installation in example.settings.local.php.