Make the diff table take up 100% of the browser width

This way on laptops with limited horizontal screen space we make the
most of what we have available to us, presenting as many columns of
text as possible at once.  With 200 plus columns of text required
for a side-by-side diff, efficient use of horizontal space is
really important.

Suggested-by: Simon Braunschmidt <Simon.Braunschmidt@gmail.com>
Signed-off-by: Shawn O. Pearce <sop@google.com>
1 file changed