Issue #2655772 by Anishnirmal, andrewmacpherson, pbuyle, BarisW, mgifford, LaravZ: Remove unneeded role="button" attribute from <button> elements

Issue #2745953 by dawehner, tim.plunkett, Wim Leers: AjaxBasePageNegotiator should not require _theme: ajax_base_page to be specified

Issue #576296 by no_angel, joachim, dagmar, jhodgdon, coderintherye, yoroy, xjm: Remove redundant description for some permissions

Issue #2719695 by alexpott, Mile23: Fix 'Drupal.Classes.ClassDeclaration.CloseBraceAfterBody' coding standard

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2650246 by swentel, Wim Leers: Only emit Contextual Links data- attributes when actually necessary

Issue #2548195 by nod_, JohnAlbin, madhavvyas, sriharsha.uppuluri: Only use single quotes in JavaScript and update .eslintrc

Revert "Issue #2570681 by juanse254, AndreaD, giancarlosotelo, lucastockmann, edurenye: when admin toolbar-oriented vertically a div is over the options"

This reverts commit 2acfed87.

Issue #2570681 by juanse254, AndreaD, giancarlosotelo, lucastockmann, edurenye: when admin toolbar-oriented vertically a div is over the options

Issue #2493475 by ifrik, walangitan, XaviP, jhodgdon, batigolix: Fix online docs references in Help to conform to our standards

Issue #2560783 by stefan.r, joelpittet, lauriii, Cottser, Sutharsan, kgoel, justAChris, Gábor Hojtsy, dawehner, jhodgdon, effulgentsia, xjm, andypost, googletorp: Replace !placeholder with :placeholder for URLs in hook_help() implementations

Issue #2569279 by dawehner, izus: Replace remaining !placeholder for Non-URL HTML outputs only in contextual.module

Issue #2559969 by alexpott: Make SafeStringInterface extend \JsonSerializable so we don't have to do so much string casting

Issue #2349819 by amateescu, swentel, Leksat, larowlan, dawehner, Gábor Hojtsy, mpdonadio, benjy, jmuzz, yched, jibran, marthinal, dmsmidt: String field type doesn't consider empty string as empty value

Issue #2078803 by Wim Leers, aspilicious, wmortada, Sumit kumar, mrjmd, John Cook: Change contextual links background color to match the styleguide

Issue #2338081 by pwolanin, dawehner, effulgentsia, kgoel, vijaycs85, mpdonadio, chx, brandon.holtsclaw, alexpott, Gábor Hojtsy, Fabianx, catch, YesCT, JvE: Local Tasks, Actions, and Contextual links mark strings from derivatives (or alter hooks) as safe and translated

Issue #2506581 by alexpott, Wim Leers, Fabianx, xjm, joelpittet, Cottser, dawehner: Remove SafeMarkup::set() from Renderer::doRender

Issue #1392754 by tss, justAChris, jhodgdon: Comply with new documentation standards for @file for namespaced class files

Issue #2511472 by Wim Leers, Fabianx, dawehner: Refactor all usages of drupal_render()/Renderer::render() that break #2450993

Issue #2481453 by dawehner, pwolanin, rteijeiro, neclimdul, znerol: Implement query parameter based content negotiation as alternative to extensions

Issue #2273925 by larowlan, aneek, lauriii, mikey_p, joelpittet, dimaro, Fabianx, xjm, jaredsmith, effulgentsia, lokapujya, iMiksu, chx, YesCT, googletorp, dawehner, Wim Leers, Cottser: Ensure #markup is XSS escaped in Renderer::doRender()

Issue #2254865 by Wim Leers, lauriii, borisson_, JeroenT, alexpott, Fabianx: toolbar_pre_render() runs on every page and is responsible for ~15ms/17000 function calls

Issue #2491155 by mikeburrelljr, Mac_Weber, opdavies: Update drupal.org and kernel.org URLs in core modules (Follow-up to 2489912)

Issue #2473105 by ifrik, jhodgdon, lostkangaroo, opratr, LinL: Update hook_help texts that link to modules that can be uninstalled

Issue #2383865 by mgifford, pguillard, rpayanm, alexpott, jhodgdon: Spellchecking Drupal - Javascript

Issue #2031641 by aburrows, lauriii, nlisgo, Pol, redsquid, tuutti, LewisNyman, akalata, agviu, kallehauge, _nolocation, rpayanm, saki007ster, mdrummond, RavindraSingh, brahmjeet789: Change active class to is-active

Issue #2154475 by tarekdj, neelam.chaudhary, droplet, nod_, lanchez, Poornima3, jamin_melville: Convert position selectors to be compatible with with jQuery native-API selector