Fix an annoying 1px visual glitch in the diff viewer.

Review Request #6967 — Created Feb. 20, 2015 and submitted — Latest diff uploaded

Information

Review Board
release-2.0.x
ebb1acd...

Reviewers

One thing that always bugged me was that each file has a bright 1px line at the
bottom, just above the border. This is visible in all browsers, though some
(like Firefox) show it darker rather than white.

I've added a -1px margin at the bottom of the table, which makes it flush with
the border.

Verified appearance in IE, Firefox and Chrome.