[FIX] account: recompute date_due

Add on_change to recompute the due date when the invoice date is modified (it was only done when modified the partner_id field
Fixes #3413
[FIX] stock_picking_wave: Missing _description
[FIX] Packaging: Debian: ignore root Makefile

Commit 388732dfa6a1 introduced a makefile at the root of the project, and
dh_auto_build is using this file instead of setup.py. Explicitely tell
debhelper to not use the makefile.
[FIX] point_of_sale: when loading models with a specified id, use read instead of search_read, to prevent inactive records from being skipped
[FIX] /web/binary/{image,saveas}: use request.registry instead of deprecated `request.session.model`

This makes the controllers work also for
public users, e.g. in the frontend.
[FIX] website_forum: avoid access error when closing spam/abuse questions

Logging the user login is not necessary, but
accessing it might cause access errors. Logging
the UID is equivalent anyway, so let's not bother.
[FIX] point_of_sale: correctly handle the rounding when the unit's rounding is set to zero
[FIX] point_of_sale: decimal precision was hardcoded to 2 in various places
[FIX] point_of_sale: some pos order fields were missing the proper decimal precision
[FIX] point_of_sale: use 'Product Price' decimal precision for product prices
[FIX] payment_*: typo, cliking -> clicking
[FIX] crm: Pending calls are also "To Do"
[FIX] stock: do not try to upper undefined picking name

opw-617750
[FIX] account.invoice report: show customer description of payment term

The payment term description (note) is meant
to be shown to customers. Restore it in the
default invoice report, as it was in 7.0.
If empty, assume the payment term is meant
to be hidden from customer, and do not show
anything.
By default the description includes the name
of the payment term, so no need to keep both.
[FIX] account: give "Invoice" users access to "Invoice Analysis" Report.

This access is required in order to display the amount invoiced on partner form
[FIX] hr_timesheet(_sheet): access rights on report

hr.timesheet.report was moved from hr_timesheet_sheet to hr_timesheet but not the ir.model.access
Avoid warning "The model hr.timesheet.report has no access rules, consider adding one."
Fixes #3319
[FIX] hr_timehseet: restrict access right

Fix error while moving it at ca209eb
[IMP] l10n_pl: backport of fd86b7a to 8.0

[IMP] l10n_pl: some corrections in Polish CoA

PLN as default currency
Many improvements in taxes and fiscal positions
Fixes #825
[FIX] #3153 Digits in wizard should be those of moves,... / Recreate delivery order from sale / Delivery method on delivery order

[IMP] Provide better purchase order picking type

[IMP] Possibly a better product uos handling in the sale order line

[FIX] Recreate of delivery order when sales order in shipping exception

[FIX] Delivery method should be passed to delivery order
[FIX] Method should pass the correct objects for adding the line for the delivery method when invoicing based on shipments