Commit date in the far future does not appear on web interface

[cirosantilli]

Compare a commit from the far future with one from 1970 (earliest possible date):

• cirosantilli/test-git-web-interface@fb21c34
• cirosantilli/test-git-web-interface@6022121

But git log shows: Date: Sun Aug 17 07:12:55 292278994 +0000 Do you have anything against year 292278994, GitHub? :-)

Not submitting this to support because it's too minor.