Fix file line padding in side-by-side viewer

Setting "padding: 0" on td was overriding the padding of the
actual CSS class we tried to apply, because its selector was higher
priority.  Instead only set padding-top,-bottom as that is what we
need to control the per-row gaps.

Change-Id: I8c5d83d4b4c08dc7197edee9614390ae50424544
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed