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

Issue #1802072 by fubhy, Stalski: Ajax callbacks should be callbacks defined as function or class method.

Issue #1431658 by Albert Volkman, xjm, kid_icarus, ChinggizKhan, rgristroph, connork: Massive API docs cleanup for system tests

Issue #1778942 by yched, tstoeckler, andypost: Fixed Discovery::getDefinition() / getDefinitions() : inconsistent return values for 'no result.
git commit -am Issue

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 #742344 by sun, pillarsdotnet, tarmstrong, neilnz, wamilton, lucascaro: Allow forms to set custom validation error messages on required fields.

Issue #1742438 by larowlan, Christian Biggins, kim.pepper, Everett Zufelt: Fixed Vertical tabs header and container rendered even when no vertical tabs.

Issue #1464554 by aspilicious, jhedstrom, sun, alexpott, disasm | heyrocker: Upgrade path for image style configuration.

Issue #1705702 by dawehner, damiankloip: Added Provide a way to allow modules alter plugin definitions.

Issue #1608878 by jessebeach, tim.plunkett, dead_arm, nod_, sun, effulgentsia, Everett Zufelt, geerlingguy: Added CTools dropbutton to core.

Larry Garfield authored Sep 02, 2012 and Alex Bronstein committed Oct 01, 2012

Port the regex path matching from Symfony to our CompiledRoute class so that we can match placeholder-using paths.

Larry Garfield authored May 23, 2012 and Alex Bronstein committed Oct 01, 2012

This is not yet complete, but it can have routes added to it and retrieved from it.

Issue #1696640 by fago, effulgentsia, tim.plunkett, dixon_, plach: Add a uniform Entity Property API.

Issue #1785436 by Boobaa: Fixed Submission of #required elements without #title and empty value does not display any error.

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

Issue #1460764 by klausi: Missing test coverage for a D7 install with non-required modules installed but disabled.

Issue #1067120 by BTMash, DamienMcKenna, corvus_ch, valthebald, mrfelton, fgm, Dave Reid: Added Missing hook_taxonomy_term_view() or hook_entity_view() when viewing a term.