Applying patch from
bug 33335 (from Erwin Dokter). Followup to
r105280
and
r106884.
* td.diff-deletedline gets a softer yellow background
* td.diff-addedline gets a lighter blue background,
* td.diff-context gets slightly lighter grey background.
* Instead of only the changed text being displayed with white-space:pre-wrap,
the entire line in a cell is.
* The font-size is changed from 'smaller' to 88%