Issue #2215543 by Antti J. Salminen, mrjmd, alexrayu, olemedia | joelpittet: Replace strong tag with CSS in template_preprocess_authorize_report and remove id..

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

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

- Patch #1183208 by effulgentsia, Niklas Fiekas, katbailey, no_commit_credit, catch: remove variable_get()('clean_url()') and switch to index.php/path pattern for dirty URL support.

Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

#592018 by mverbaar, Jacine, et al: Re-organize styles across stylesheets from system.module and separate presentational and behavior-supporting styles.

#538660 by JacobSingh, dww, JoshuaRogers, adrian, Crell, chx, anarcat, and cwgordon7: Add a functioning Plugin Manager to core. Can you say module installation and updates through the UI? I knew you could! :D

#141727 by merlinofchaos, dvessel, sun: restore themeability support for maintenance pages (regression)

- Refactor partial-page handling for the maintenance page. It's an exotic quirk for update.php and belongs there.

- Patch #68926 by chx, jeremy, steven, eaton, webchick, amazon, neil, nedjo et al: an initial install system for Drupal core.