revert r13199 (#17151)

Chrome 36.0.1985.143 was released.

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013350
Move some RepositoriesController logic to Repository#stats_by_author (#13487).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013351
Fix text failing on some rubies/sql drivers because of improper length in Change#action (#13487).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013352
Honnor committers/users mapping in repository statistics (#13487).

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extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4013353