Issue #1798732 by Dean Reilly, westie, alexpott, sun: convert install_task() variable to use state system.

Issue #1798732 by Dean Reilly, westie, alexpott: Convert install_task() variable to use state system.

Issue #1608842 by chx, alexpott, sun, effulgentsia, beejeebus, tim.plunkett et al: Replace list of bootstrap modules, enabled modules, enabled themes, and default theme with config.

Issue #1642526 by andypost, Berdir, dixon_: Add upgrade path from for generating UUIDs for all core entities.

Issue #1642062 by tim.plunkett, xjm, chx, merlinofchaos, damiankloip, dawehner, Berdir, aspilicious, Fabianx: Add TempStore for persistent, limited-term storage of non-cache data.

Patch #1161486 by rootatwc, sun, andypost, catch, marcingy, aspilicious, cam8001: Move IP blocking into its own module.

Issue #1789606 by sun, alexpott: Fixed Upgrade path tests for all system module variables converted to CMI so far.

Issue #1175054 by msonnabaum, chx, sun, tim.plunkett, arlinsandbulte, beejeebus: Add a storage (API) for persistent non-configuration state.

Issue #1627006 follow-up by YesCT, webflo, Gábor Hojtsy: CMI conversion and minor followups to 'Collect project information for translation update'.

Issue #1468328 by Berdir: Move file entity info, managed file, and file usage functionality into File module.

Issue #1691438 by Dave Reid, CrashTest_, quicksketch, jbrown: Fixed Regression: {file_managed()}.filename should NOT be binary (and case-sensitive by default).

Issue #1741804 by beejeebus, sun, chx, alexpott, matason: Implement a config import/staging directory.

Issue #1669902 by alexpott, aspilicious, sun: Adjust system.performance configuration for new guidelines.

- Patch #1496458 by swentel, pcambra, n3or, sun, kbasarab, marcingy, no_commit_credit: convert maintenance mode settings to configuration system.

Issue #1493108 by marcingy, sun, Mike Wacker, kbasarab, Berdir, Rok Žlender, cosmicdreams, alexpott: Convert logging and error settings to configuration system.

Issue #1493108 by marcingy, Mike Wacker, sun, kbasarab, Berdir, Rok Žlender, cosmicdreams, alexpott: Convert logging and error settings to configuration system.

- Patch #1496462 by acrollet, sun, cosmicdreams, Niklas Fiekas, aspilicious: convert RSS publishing settings to configuration system.

- Patch #1677304 by socketwench, Niklas Fiekas: Remove drupal_deliver_page(), ajax_deliver(), drupal_deliver_html_page().

- Patch #1493098 by sun, jcisio, pcambra, Pol, wamilton, Rok Žlender, beejeebus: convert cron settings to configuration system.

- Patch #1471848 by BassistJimmyJam, michaellenahan: user interface text containing URLs in translated part.