Issue #1373142 by sun, beejeebus, aspilicious, amateescu: Use the Testing profile. Speed up testbot by 50%.

- Patch #1216976 by cosmicdreams, DyanneNova, aspilicious, rupl, Jacine, mortendk, dcmouyard: clean up the CSS for Comment module.

- Patch #1216976 by cosmicdreams, DyanneNova, aspilicious, rupl, Jacine, mortendk, dcmouyard: clean up the CSS for Comment module.

- Patch #532512 by Gábor Hojtsy, andypost, no_commit_credit: fixed Plural string storage is broken, editing UI is missing.

This reverts commit de2ef9de.

Issue #811542 by bojanz, sun, mlncn, chx, pillarsdotnet, loganfsmyth, xjm: Fixed Regression: Required radios throw illegal choice error when none selected.

Issue #1472350 by John Morahan, greggles: Make 'translate interface' restricted after DRUPAL-PSA-2012-001 - localizations - Cross Site Scripting.

This reverts commit 45a4c447.

This reverts commit 2d6fdda1.

Issue #1323120 by webchick, David_Rothstein, kotnik, amateescu: Documentation follow-ups for convert cache system to PSR-0.

Issue #965300 by Gábor Hojtsy, xjm: Change LANGUAGE_NONE to LANGUAGE_NOT_SPECIFIED; add LANGUAGE_NOT_APPLICABLE and LANGUAGE_MULTIPLE.

Issue #1431076 by c960657, nod_, purencool, Nor4a: Fixed Overlay does not work with prefixed URL paths .

Issue #1414412 by pillarsdotnet, MrHaroldA, droplet: Fixed Skip #conjunction key in __clone() method of core/includes/database/query.inc.

Issue #1361218 by Owen Barton: Fixed Focus jumps to tab when pressing enter on a form element within tab.

Issue #1470300 by Gábor Hojtsy, jhodgdon: Added language section to CHANGELOG.txt and a few minor punctuation updates