REST API: Integer custom field validation fails when using non-string values (#15929).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012704
Redirect to back_url or referer when clicking "Sign in" while already logged-in (#15926).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012705
Successful update notice for workflows (#15831).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012706
Japanese translation updated by Go MAEDA (#15962)

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012707