Issue #180: Drupal 7.27 release backports.
Merge pull request #340 from quicksketch/180/drupal727

Issue #180: Drupal 7.27 release backports.
Issue #1493098 by sun, jcisio, pcambra, Pol, wamilton, Rok Žlender, beejeebus: convert cron settings to configuration system.
Patch #1697170 by tobiasb, nick_schuch, adamdicarlo, dagmar: convert menu_configure() to new configuration system.
Issue #1496542 by cosmicdreams, sun, chx, vasi1186, aspilicious, alexpott, nadavoid, Pedro Lozano, disasm, andypost | heyrocker: Convert site information to config system.
Merge pull request #343 from hellomrcat/170-site

Issue #1496542 by cosmicdreams, sun, chx, vasi1186, aspilicious, alexpott, nadavoid, Pedro Lozano, disasm, andypost | heyrocker: Convert site information to config system.
Issue #1496458 by swentel, pcambra, n3or, kbasarab, sun, marcingy: Convert maintenance mode settings to configuration system.
Merge pull request #346 from hellomrcat/170-maint

Issue #1496458 by swentel, pcambra, n3or, kbasarab, sun, marcingy: Convert maintenance mode settings to configuration system.
Merge pull request #347 from hellomrcat/170-mencon

Patch #1697170 by tobiasb, nick_schuch, adamdicarlo, dagmar: convert menu_configure() to new configuration system.
Issue #1797106 by dcam, izus, xjm, lazysoundsystem, zuuperman, Lars Toomre: Remove t() from test asserts in field module.
Issue #1742830 by dcam, izus, lazysoundsystem, andypost, Lars Toomre: Remove t() from test asserts in contact module.]
Issue #1797360 by dcam, izus, xjm, Lars Toomre: Remove t() from test asserts in locale, path, and language modules.
Issue #1797220 by dcam, izus, xjm, Lars Toomre: Remove t() from test asserts in entity system tests.
Issue #1797296 by dcam, izus, xjm, Lars Toomre: Remove t() from test asserts in file system tests.
Issue #1204784 by bdgreen, Kevin Morse, valthebald, kiamlaluno, droplet: Fix code comment in drupal_retrieve_form.
Issue #1739986 by RobLoach, pwolanin, sun, Berdir, moshe weitzman, andypost, dcam: Fixed fallback in backdrop_get_hash_salt(), move it to bootstrap.inc, use instead of ['hash_salt'].
Issue #2027351 by micnap, longwave, helenkim: Fix up grammar and awkward parens in API docs in menu.inc.
Issue #2002182 by w00zle: Convert hook_filter_info docs to use new callback function standard.
Issue #1034828 by Steven Jones, Bladedu, brunodbo | Rob C: Fixed 'No active batch' error after user cancelling own account.
Issue #2055019 by colan: Fixed Syslog configure link missing on Extend/Modules page.