Issue #1480854 by tim.plunkett, Noyz, Bojhan, yoroy, kika: Convert operation links to '#type' => 'operations'.

Issue #1677830 by slashrsm: Improve docs for user and node hooks in regards to database transactions

Issue #1642526 by andypost, Berdir, dixon_: Add upgrade path from for generating UUIDs for all core entities.

Issue #1642062 by tim.plunkett, xjm, chx, merlinofchaos, damiankloip, dawehner, Berdir, aspilicious, Fabianx: Add TempStore for persistent, limited-term storage of non-cache data.

Issue #1760530 by jenlampton, Albert Volkman, crazyrohila, Risse, justafish, Fabianx: Move all template files provided by core modules and themes into a 'templates' directory inside that module directory.

Issue #1538462 by c960657, Niklas Fiekas, nod_: Fixed Cannot log in with OpenID due to 'required' attribute.

Issue #1251188 by Sagar Ramgade, cam8001, MauHG, sag_13684, fenstrat, ruloweb, xjm: Fixed Set unique titles for user/register, user/password, and user/login menu items.

Issue #1276908 by jessebeach, nod_, moshe weitzman, lewisnyman, webchick: Fixed Administrative tables are too wide for smaller screens.

Issue #1754208 by PrabhuG, webflo, savithac, Gábor Hojtsy: Convert hook_mail() and hook_mail_alter() to langcode.

Issue #1757566 by alexpott, aspilicious: Convert user account e-mail templates to configuration system.

Issue #1700382 by Albert Volkman, cam8001: Replace remaining references to drupal_attributes() with new Attributes().

Issue #1761040 by sun, tim.plunkett, fago, effulgentsia: Rename Storable, Entity, and Configurable to Entity, ContentEntity, and ConfigEntity.

- Patch #322995 by Schnitzel, c31ck, webflo, penyaskito: provide a distinct administration user interface language option.

Issue #1723774 by googletorp, Berdir, corvus_ch: user_delete_multiple() does not use UserStorageController.

Issue #1468328 by Berdir: Move file entity info, managed file, and file usage functionality into File module.

Issue #1737148 by nod_, SebCorbin, larowlan, tim.plunkett, Albert Volkman, nick_schuch, sun: Explicitly declare all JS dependencies, don't use drupal_add_js().

Issue #716496 by killtheliterate, rootwork: Make sure all core template files are in themeable group

Issue #1305378 by bforchhammer, penyaskito, k4v, Schnitzel, Gábor Hojtsy, Dave Reid: Added Tokens should use $options["langcode"] and not need a language object.

Issue #1496534 by cosmicdreams, alexpott, aspilicious, kim.pepper, acrollet, dagmar, beejeebus, wizonesolutions | heyrocker: Convert account settings to configuration system.

Issue #1754162 by Gábor Hojtsy, webflo: Fixed Implement language aware tokens for one time login link and cancel link.

Issue #1668820 by sun, xjm, tim.plunkett, fgm: Concept, base class, and interface for configurable objects.