Issue #2169765 by philipz, Sutharsan, ckrina, c_lehel, LewisNyman: Redesign update.php to be more consistent with the installation process.

Revert "Issue #2169765 by philipz, Sutharsan, ckrina, c_lehel, LewisNyman: Redesign update.php to be more consistent with the installation process."

This reverts commit 728aad1d.

Issue #2169765 by philipz, Sutharsan, ckrina, c_lehel, LewisNyman: Redesign update.php to be more consistent with the installation process.

Issue #2195675 by philipz, mdrummond, LewisNyman: Breadcrumbs push the sidebar down on node edit pages.

Issue #1490402 by LewisNyman, nod_, mcjim, mdrummond, rteijeiro, jessebeach, Bojhan, ry5n: Redesign tabs and the content header.

Issue #1069152 by droplet, alexandrezia, jhedstrom | ogi: Throbber in textfield is misaligned when browser hardware acceleration enabled (gfx).

Issue #641734 by echoz, LewisNyman, davidtrainer, Cottser, falkendk, rteijeiro: Separate generic html elements' style into seven.base.css.

Issue #675446 by mgifford, RobLoach, amateescu, nod_, longwave, oxyc, rteijeiro, tomyouds, Jelle_S, mcrittenden, Sutharsan, hansyg, Angry Dan, clemens.tolboom, droplet | Dave Reid: Change notice: Use jQuery UI Autocomplete.

Issue #2033959 by borisbaldinger, Gábor Hojtsy, thamas, YesCT: Improve design of language detection and selection settings page.

Issue #1982256 by mortendk, rteijeiro, tim.plunkett, LewisNyman, tlattimore, yannickoo, ry5n: Clean up html.html.twig markup.

Issue #1851414 by nod_, quicksketch, frega, dawehner, damiankloip: Convert Views to use the abstracted dialog modal.

Issue #1839318 by JohnAlbin, echoz: Added Replace drupal.base.css library with normalize.css for all themes.

Issue #2015789 by fubhy, echoz, rteijeiro, LewisNyman, penyaskito: Remove language_css_alter() (RTL stylesheets) in favor of HTML 'dir' attribute.

Issue #1337554 by LewisNyman, Bojhan, YesCT, Cottser, jenlampton, Xano, David_Rothstein, larowlan, nilnullvoid: Develop and use separate branding for the installer.

Issue #1861702 by echoz, rteijeiro, LewisNyman, mcjim: Add a responsive grid to the Appearance page.

Issue #1987066 by Kevin Morse, JohnAlbin, rteijeiro, echoz, ry5n: Rename files to match CSS file naming convention.

Issue #1973456 by echoz: Fixed .element-invisible on element at right causes horizontal scrollbar on desktop or right gap on phone on webkit browsers.

Issue #1937824 follow-up by echoz, mariacha1: Simpler fix for Improve button-link spacing on confirm form.

Issue #1940208 by pameeela, mgifford, echoz: Fixed Contrast for add & remove shortcut links on overlay not sufficient for WCAG - Regression.