German translation updated by Daniel Felix (#17399)

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013284
Traditional Chinese translation updated by ChunChang Lo (#17421)

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013285
remove trailing white-spaces from app/models/user.rb

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013287