Issue #1779638 follow-up by sun, alexpott, Maxtorete: Fixed another unexplained test failure in LocaleFileImportStatus->testBulkImportUpdateExisting().

Issue #1785392 by BWPanda: Fix reference and grammar in hook_field_formatter_info_alter documentation

Issue #1460764 by klausi: Missing test coverage for a D7 install with non-required modules installed but disabled.

Issue #1779638 by sun: Better debug for unexplained test failure in LocaleFileImportStatus->testBulkImportUpdateExisting().

Issue #1661814 follow-up by mcjim: Fixed Regression: Seven's responsive maintenance mode template makes installer look crappy, lost step display.

Issue #1741386 by lazysoundsystem, rasmusluckow: Removing t() from asserts in simpletests in book module.

Issue #1175764 by tim.plunkett, Rob Loach, eojthebrave: Added Have theme('image_style()') inject the style name as a class.

Issue #1757504 by Maxtorete, boran, c31ck, Gábor Hojtsy: Fixed Regression: language field is not visible on manage display.

Issue #1772708 by alexpott, sun, chx, catch, beejeebus: Fixed The configuration directories can not be outside of DRUPAL_ROOT.

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

Issue #1627006 follow-up by YesCT, webflo, Gábor Hojtsy: CMI conversion and minor followups to 'Collect project information for translation update'.

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

Issue #1542620 by djdevin, rootatwc: Fixed Fatal errors when file permissions for settings.php are messed up (can't read file).

Issue #1739592 by Albert Volkman, andy.hails, dawehner: Fix up docs of a few language-related functions

Issue #362889 by Xano, andypost, dawehner, Davy Van Den Bremt, cweagans, sun: Move drupal_common_theme() from common.inc into theme.inc.

Issue #1164760 by tim.plunkett, LoMo, Mile23, David_Rothstein, webchick, Bojhan, yoroy, naught101: [meta] Rename 'Modules' in toolbar to 'Extend'.