Issue #2408581 by rachel_norfolk, zach.bimson, MarkoT91, Ieva Uzule, idebr, LewisNyman, sarav.din33: Clean up the "help" component in Bartik

Issue #2412579 by idebr, geertvd: Tabledrag applies odd/even classes to tables with striping disabled

Issue #1987612 by valthebald, Mile23, aspilicious, Pinolo, InternetDevels: Convert ajax_test_dialog_contents() to a new style controller

Issue #2402061 by emma.maria, Katiemouse, er.pushpinderrana: Reusable heading classes should be "heading-*" not "header-*"

Issue #2227121 by emma.maria, Vally79, DickJohnson, Jill L, frankfarm, rootwork, jamesquinton, Rajendar Reddy, krueschi, ericxb, seiplax, bluegriff: The "Default country" dropdown element overflows the installer container at certain widths

Issue #2410539 by cafuego, jibran, larowlan: Views schema prevents saving of view with disabled display through code

Issue #2415399 by lokapujya, ultimike: D6->D8 migration: User role based block visibility settings not migrated properly

Issue #2402639 by Katiemouse, nitvirus, lakshminp, dernetzjaeger, emma.maria, gippy, kporras07, john guant, Prashant.c: Rename the footer regions in Bartik

Issue #2349517 by emma.maria, b0unty, idebr, tarekdj, lauriii, Manjit.Singh, adci_contributor: Fix RTL for Bartik's vertical tabs

Issue #2375997 by Mile23, hussainweb, tstoeckler, omers: Avoid tying Drupal 8's composer.json to specific package commits

Issue #2165989 by Xano, pcambra, damiankloip, dawehner: Add a Views field handler for multiple entity operations

Issue #2400233 by emma.maria, rpayanm, Katiemouse, LewisNyman: Add reusable heading classes to Bartik

Issue #2358079 by pwolanin, Berdir: Require a specific placeholder format in db_query() in order to trigger argument expansion, and require explicit 'IN' parameter for conditions

Issue #2360175 by zaporylie, gaurav.goyal, droplet, sivaji@knackforge.com, mcdruid, nod_, er.pushpinderrana, brahmjeet789: Change .append(' ') with CSS style in system.admin.css

Issue #2417645 by tim.plunkett, effulgentsia, pwolanin: Change destination query string handling to break dependence on system path

Issue #2418613 by pwolanin: Fix #0 bug in toUriString() method in Url class, clarify toString() vs toUriString()

Issue #2417705 by idebr: Autocomplete suggestions visual regression after modal and jQuery UI update