Issue #1883154 backport form D6: Translation version should not be more recent than core or module version.
Issue #1883154 by Sutharsan: Translation version should not be more recent than core or module version.
Issue #1837704 by lambic, Sutharsan: Stop spamming the watchdog log with 'Automatically checked 0 translations, updated 0.'
Issue #1554570 by ralf57, igor.ro, Sutharsan: drush l10n-update command doesn't take the mode option into account
Issue #1863544 by rootatwc: Proxy support for l10n_update_http_request
Issue by 1910446 Simon Georges: Remove useless files directive from .info files
Issue #1508016 by igor.ro: Fixed Drush set error if no translations to update.
Issue #1541624 by Sutharsan: Fixed Column l10n_update_project.server is NULL.
Missing variables in watchdog message.
Improve error reporting when checking files.
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