code format clean up ApplicationHelper#link_to_issue

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012808
code format clean up ApplicationHelper#parse_redmine_links

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012809
Traditional Chinese translation updated by ChunChang Lo (#16023)

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012810
Rails4: replace hard-coded html with class at ApplicationHelperTest#test_wiki_links_in_tables

See r12784 comment.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012811
Rails4: replace hard-coded html with class at ApplicationHelperTest#test_attachment_link_should_link_to_latest_attachment

See r12784 comment.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012812
Rails4: replace hard-coded html with class at ApplicationHelperTest#test_attachment_links

See r12784 comment.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012813