Add a patch table footer parameter

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Add background color to the week's events

Indicate what patch date events were used at the summary table to
produce the report.

This is needed because a patch submitted weeks ago can be merged
only today.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>