Traditional Chinese translation updated by ChunChang Lo (#16060)

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012871
Rails4: replace hard-coded html with class at IssuesHelperTest

See r12784 comment.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012872
add "jruby-20mode" and "jruby-21mode" to .travis.yml

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012873