[FIX] website_sale: align dashboard data

Before this commit, the python domain on sale.report would not get today's data
as it would do `date >= 2020-03-03`, but it means `2020-03-03 00:00:00`,
actually excluding today.
Then the JS domains to retrieve those data once you click on the metric (it
loads an act window with his domain + additional domain though js) would have
a different date domain, including today.

Note that there is still some inconsistencies between python and JS such as
last month filter which is in python (in template filter) today - 30 days
while in JS it is moment.subtract 1 month which might be 31 days.