Issue #1317628 by Albert Volkman, Gaelan, disasm, mjonesdinero, xjm: Clean up for API docs in include files starting with n-z

Issue #1833516 by Berdir, chx, catch, webchick: Add $settings for low-level configuration - move things out of .

Issue #1536262 by sun: Fixed entering a site name when installing Drupal 8 has no effect until caches are cleared.

Issue #916424 by rjgoldsborough, Jacine: Merge system.messages.css and system.menus.css into system.theme.css.

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.

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.

#874370 by Jeff Burnz, aspilicious, Cliff, mgifford, yoroy, et al: Fixed System messages need identifying icons (WCAG 2.0).

- Patch #812016 by effulgentsia, chx, redndahead, Damien Tournoud: themes cannot always participate in drupal_alter().

- Patch #807396 by Berdir, carlos8f, David_Rothstein: database errors not displaying during install.

- Patch #766100 by andypost: undefined function _system_rebuild_theme_data() when trying to run update.php.

#766100 by andypost: Fixed Undefined function _system_rebuild_theme_data() when trying to run update.php from D6 -> D7.

#679890 follow-up by Bojhan, aspilicious, and agentrickard: Remove more extraneous 'Please' in the interface.

#299308 by redndahead, Dave Reid, dropcube, catch, redndahead, and dbabbage: Add POD to installation requirements.

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

#547068 by sun, seutje, yoroy, Gábor Hojtsy, adrian, Bojhan, and markboulton: Use Seven theme for installation / updates.